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 A186908 #8 May 25 2024 23:41:01 %S A186908 59969593,2974946682,99241308567,2536761070723,52666517720011, %T A186908 921058887545363,13921822487031205,185414592506642580, %U A186908 2208956268019713255,23828517723857362267,235072125997423449023 %N A186908 Number of (n+2) X 4 0..6 arrays with each 3 X 3 subblock having rows and columns in lexicographically nondecreasing order. %C A186908 Column 2 of A186915. %H A186908 R. H. Hardin, <a href="/A186908/b186908.txt">Table of n, a(n) for n = 1..200</a> %H A186908 R. H. Hardin, <a href="/A186908/a186908.txt">Polynomial of degree 89</a> %F A186908 Polynomial of degree 89 in n, see link. %e A186908 Some solutions for 6 X 4 %e A186908 ..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0 %e A186908 ..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0 %e A186908 ..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0 %e A186908 ..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0 %e A186908 ..0..1..1..4....0..1..5..6....0..0..2..5....0..1..3..6....0..0..3..4 %e A186908 ..2..1..5..0....4..6..2..3....3..5..4..2....4..1..3..6....1..3..4..6 %Y A186908 Cf. A186915. %K A186908 nonn %O A186908 1,1 %A A186908 _R. H. Hardin_, Feb 28 2011