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 A202377 #7 Jul 22 2025 16:33:42 %S A202377 11362,68965,327679,1285065,4830102,16261405,51833855,156557263, %T A202377 450660848,1250551900,3351714309,8722793052,22118866900,54801500414, %U A202377 132976157412,316751623141,741810250017,1710936850978,3891524278627 %N A202377 Number of (n+2)X9 binary arrays avoiding patterns 001 and 111 in rows and columns. %C A202377 Column 7 of A202378 %H A202377 R. H. Hardin, <a href="/A202377/b202377.txt">Table of n, a(n) for n = 1..210</a> %e A202377 Some solutions for n=2 %e A202377 ..0..1..1..0..1..1..0..0..0....0..1..0..1..1..0..1..0..0 %e A202377 ..1..1..0..1..0..1..1..0..0....0..1..1..0..0..0..0..0..0 %e A202377 ..1..0..1..0..1..0..0..0..0....0..0..0..0..0..0..0..0..0 %e A202377 ..0..1..0..1..0..0..0..0..0....0..0..0..0..0..0..0..0..0 %K A202377 nonn %O A202377 1,1 %A A202377 _R. H. Hardin_ Dec 18 2011