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 A186177 #7 Jul 22 2025 10:18:25 %S A186177 140871930232,16059530994398,995828085723859,42174821764604242, %T A186177 1345005095452611398,34184079614729409659,719176668433423037034, %U A186177 12873752982804494965778,200226675186485305381447 %N A186177 Number of (n+2)X8 0..5 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order. %C A186177 Column 6 of A186180 %H A186177 R. H. Hardin, <a href="/A186177/b186177.txt">Table of n, a(n) for n = 1..125</a> %e A186177 Some solutions for 4X8 %e A186177 ..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..3 %e A186177 ..0..0..0..0..0..0..1..5....0..0..0..0..0..0..1..4....0..0..0..0..0..0..1..3 %e A186177 ..0..0..0..0..0..0..3..5....0..0..0..0..0..0..5..1....0..0..0..0..0..0..4..2 %e A186177 ..0..0..0..0..0..3..4..4....0..0..0..0..0..3..0..2....0..0..0..0..0..3..2..3 %K A186177 nonn %O A186177 1,1 %A A186177 _R. H. Hardin_ Feb 13 2011