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 A186914 #7 Jul 22 2025 10:35:15 %S A186914 449959668016830,185414592506642580,36804096662464163093, %T A186914 4617630757685272558765,411179480114108991321807, %U A186914 27790825962428614280888055,1491377073810394581396929600 %N A186914 Number of (n+2)X10 0..6 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order. %C A186914 Column 8 of A186915 %H A186914 R. H. Hardin, <a href="/A186914/b186914.txt">Table of n, a(n) for n = 1..8</a> %e A186914 Some solutions for 4X10 %e A186914 ..0..0..0..0..0..0..0..0..0..6....0..0..0..0..0..0..0..0..0..5 %e A186914 ..0..0..0..0..0..0..0..0..1..4....0..0..0..0..0..0..0..0..0..6 %e A186914 ..0..0..0..0..0..0..0..0..2..1....0..0..0..0..0..0..0..0..2..2 %e A186914 ..0..0..0..0..0..0..0..0..5..5....0..0..0..0..0..0..0..0..6..6 %K A186914 nonn %O A186914 1,1 %A A186914 _R. H. Hardin_ Feb 28 2011