This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A231836 #7 Jul 23 2025 06:43:02 %S A231836 144,3309,678660,124132900,24188209253,4666623161419,899426070636904, %T A231836 173546274977761257,33474310504831841795,6456965889651937136227, %U A231836 1245519756272860837583554,240252847617486843960049416 %N A231836 Number of nX5 0..3 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors. %C A231836 Column 5 of A231839 %H A231836 R. H. Hardin, <a href="/A231836/b231836.txt">Table of n, a(n) for n = 1..210</a> %H A231836 R. H. Hardin, <a href="/A231836/a231836.txt">Empirical recurrence of order 82</a> %F A231836 Empirical recurrence of order 82 (see link above) %e A231836 Some solutions for n=2 %e A231836 ..3..3..0..0..0....2..2..1..1..2....2..0..0..0..0....1..1..0..0..3 %e A231836 ..0..0..3..2..2....2..1..1..1..1....0..0..0..1..2....3..0..0..2..2 %K A231836 nonn %O A231836 1,1 %A A231836 _R. H. Hardin_, Nov 14 2013