OEIS Parity Triangles
@oeistriangles.peterkagey.com
A bot by @peterkagey.com that posts a Parity Triangle from the OEIS every day.
See my blog post for more details: https://peterkagey.com/blog/2021/03/parity-bitmaps-from-the-oeis/
See my blog post for more details: https://peterkagey.com/blog/2021/03/parity-bitmaps-from-the-oeis/
OEIS sequence A238354 by Joerg Arndt and Alois P. Heinz (February 2014).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 31, 2026 at 10:27 PM
OEIS sequence A238354 by Joerg Arndt and Alois P. Heinz (February 2014).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A325006 by Robert A. Russell (May 2019).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 30, 2026 at 10:56 PM
OEIS sequence A325006 by Robert A. Russell (May 2019).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A144961 by Gary W. Adamson (September 2008).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 29, 2026 at 11:25 PM
OEIS sequence A144961 by Gary W. Adamson (September 2008).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A296386 by R. H. Hardin (December 2017).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 28, 2026 at 12:23 AM
OEIS sequence A296386 by R. H. Hardin (December 2017).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A299654 by R. H. Hardin (February 2018).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 26, 2026 at 1:21 AM
OEIS sequence A299654 by R. H. Hardin (February 2018).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A154228 by Roger L. Bagula (January 2009).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 25, 2026 at 1:50 AM
OEIS sequence A154228 by Roger L. Bagula (January 2009).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A176081 by Roger L. Bagula (April 2010).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 24, 2026 at 2:19 AM
OEIS sequence A176081 by Roger L. Bagula (April 2010).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A321126 by Franck Maminirina Ramaharo (November 2018).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 21, 2026 at 3:46 AM
OEIS sequence A321126 by Franck Maminirina Ramaharo (November 2018).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A334824 by G. C. Greubel and Michel Marcus (May 2020).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 20, 2026 at 4:15 AM
OEIS sequence A334824 by G. C. Greubel and Michel Marcus (May 2020).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A299942 by R. H. Hardin (February 2018).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 19, 2026 at 4:44 AM
OEIS sequence A299942 by R. H. Hardin (February 2018).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A135230 by Gary W. Adamson (November 2007).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 16, 2026 at 6:11 AM
OEIS sequence A135230 by Gary W. Adamson (November 2007).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A105147 by Vladeta Jovovic (April 2005).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 14, 2026 at 7:09 AM
OEIS sequence A105147 by Vladeta Jovovic (April 2005).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A143565 by Alois P. Heinz (August 2008).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 13, 2026 at 7:38 AM
OEIS sequence A143565 by Alois P. Heinz (August 2008).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A094665 by Philippe Deléham (June 2004).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 11, 2026 at 8:36 AM
OEIS sequence A094665 by Philippe Deléham (June 2004).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A173047 by Roger L. Bagula (February 2010).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
January 9, 2026 at 9:34 AM
OEIS sequence A173047 by Roger L. Bagula (February 2010).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)