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 A232074 #6 Jul 23 2025 06:52:01 %S A232074 2208,189404,18480458,1786680190,173086988636,16761785898550, %T A232074 1623332441842096,157213734438546256,15225588252754045874, %U A232074 1474543539136159332212,142804250145920967976120 %N A232074 Number of (n+1)X(6+1) 0..1 arrays with every element equal to some horizontal, diagonal or antidiagonal neighbor, with top left element zero. %C A232074 Column 6 of A232076 %H A232074 R. H. Hardin, <a href="/A232074/b232074.txt">Table of n, a(n) for n = 1..210</a> %e A232074 Some solutions for n=2 %e A232074 ..0..0..0..1..0..1..1....0..0..1..1..1..0..0....0..1..1..0..0..0..1 %e A232074 ..0..0..0..1..1..0..0....0..0..1..0..1..0..1....0..0..1..1..1..1..0 %e A232074 ..0..0..1..0..1..1..0....0..1..0..1..0..1..1....1..1..1..1..0..0..1 %K A232074 nonn %O A232074 1,1 %A A232074 _R. H. Hardin_, Nov 17 2013