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 A232294 #6 Jul 23 2025 07:16:02 %S A232294 161,138505,91293443,60054788123,39660722273643,26187902385019287, %T A232294 17291702408190208843,11417620659901817284297, %U A232294 7538993566244924939045655,4977957040827120657829369243,3286918345241124729174039442211 %N A232294 Number of nX7 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally. %C A232294 Column 7 of A232295 %H A232294 R. H. Hardin, <a href="/A232294/b232294.txt">Table of n, a(n) for n = 1..210</a> %e A232294 Some solutions for n=2 %e A232294 ..2..2..2..1..0..2..2....2..0..1..0..2..1..0....1..2..2..1..0..1..2 %e A232294 ..1..0..2..1..0..2..2....1..2..2..2..0..2..1....0..1..1..2..0..1..0 %K A232294 nonn %O A232294 1,1 %A A232294 _R. H. Hardin_, Nov 22 2013