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 A185519 #7 Jul 22 2025 09:52:00 %S A185519 197329,91539073,7998109489,1894624012417,249246507105681, %T A185519 46861672135881249,7163899183570889649,1241739109392066416737, %U A185519 200179355912933753165009,33717771304641221699901697 %N A185519 Number of (n+1)X8 0..2 arrays with every 2X2 subblock singular. %C A185519 Column 7 of A185521 %H A185519 R. H. Hardin, <a href="/A185519/b185519.txt">Table of n, a(n) for n = 1..181</a> %e A185519 Some solutions for 3X8 %e A185519 ..0..0..0..0..1..1..0..2....0..0..1..0..1..1..2..0....0..0..0..0..2..0..1..0 %e A185519 ..0..0..0..0..0..0..0..2....0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0 %e A185519 ..0..0..0..2..1..1..0..0....0..0..1..1..1..0..1..2....0..0..1..1..2..0..0..2 %K A185519 nonn %O A185519 1,1 %A A185519 _R. H. Hardin_ Jan 29 2011