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 A232321 #10 Apr 22 2021 14:02:56 %S A232321 89,2640,90157,3815483,161243887,6736602042,281959315373, %T A232321 11801434817942,493946679273719,20673894894951135,865297397287880776, %U A232321 36216658523348672068,1515833034012979726393,63444555196518747182748 %N A232321 Number of (5+1) X (n+1) 0..1 arrays with every element equal to some horizontal or antidiagonal neighbor, with top left element zero. %C A232321 Row 5 of A232316. %H A232321 R. H. Hardin, <a href="/A232321/b232321.txt">Table of n, a(n) for n = 1..210</a> %e A232321 Some solutions for n=3 %e A232321 ..0..0..0..0....0..0..0..1....0..0..1..1....0..0..1..1....0..0..1..0 %e A232321 ..0..1..0..0....0..0..1..1....0..1..1..0....1..1..1..0....1..1..0..1 %e A232321 ..1..1..1..1....0..1..1..1....1..0..0..1....1..0..0..0....1..0..1..1 %e A232321 ..0..0..0..0....0..0..0..0....1..1..1..0....1..1..1..0....0..1..1..0 %e A232321 ..1..1..1..0....1..1..0..0....0..0..0..1....1..1..0..0....0..0..0..0 %e A232321 ..1..1..0..0....1..1..0..0....0..1..1..1....1..1..0..0....0..0..0..0 %Y A232321 Cf. A232316. %K A232321 nonn %O A232321 1,1 %A A232321 _R. H. Hardin_, Nov 22 2013