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 A231938 #6 May 12 2023 15:00:42 %S A231938 144,42104,4736026,691418144,86074040354,10417626293694, %T A231938 1320620287047433,167980047970274816,21111589946666517004, %U A231938 2654446369108557445386,334772700009651200937863,42209724955108647369437110 %N A231938 Number of n X 5 0..3 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors. %C A231938 Column 5 of A231940. %H A231938 R. H. Hardin, <a href="/A231938/b231938.txt">Table of n, a(n) for n = 1..210</a> %e A231938 Some solutions for n=2 %e A231938 ..0..0..0..3..2....1..0..0..3..0....3..1..0..0..1....0..1..2..3..1 %e A231938 ..2..2..0..0..1....0..2..0..0..3....1..0..0..1..2....0..0..0..0..0 %Y A231938 Cf. A231940. %K A231938 nonn %O A231938 1,1 %A A231938 _R. H. Hardin_, Nov 15 2013