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 A232021 #7 Jul 23 2025 06:48:05 %S A232021 121,2447,429976,66962048,11145921002,1843879894941,304550219824247, %T A232021 50342644960736903,8320423932674561675,1375162243575550144598, %U A232021 227283727667243341913617,37564730328193369286093947 %N A232021 Number of nX6 0..2 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors. %C A232021 Column 6 of A232023 %H A232021 R. H. Hardin, <a href="/A232021/b232021.txt">Table of n, a(n) for n = 1..210</a> %H A232021 R. H. Hardin, <a href="/A232021/a232021.txt">Empirical recurrence of order 79</a> %F A232021 Empirical recurrence of order 79 (see link above) %e A232021 Some solutions for n=2 %e A232021 ..0..0..0..0..0..1....1..0..0..0..0..0....0..0..0..0..0..0....2..2..2..2..2..2 %e A232021 ..0..0..2..0..0..0....0..0..1..0..0..0....1..0..0..2..1..1....2..2..2..2..2..2 %K A232021 nonn %O A232021 1,1 %A A232021 _R. H. Hardin_, Nov 17 2013