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 A232323 #10 Jul 23 2025 07:18:55 %S A232323 610,60605,6764246,1036869496,158534446141,23818815015639, %T A232323 3587649343841650,540472751303594139,81418399274442809469, %U A232323 12264913365847776296865,1847601218114334916009886 %N A232323 Number of (7+1)X(n+1) 0..1 arrays with every element equal to some horizontal or antidiagonal neighbor, with top left element zero. %C A232323 Row 7 of A232316 %H A232323 R. H. Hardin, <a href="/A232323/b232323.txt">Table of n, a(n) for n = 1..210</a> %e A232323 Some.solutions.for.n=2 %e A232323 ..0..0..0....0..0..0....0..0..1....0..0..0....0..0..0....0..0..0....0..0..0 %e A232323 ..1..1..0....0..1..1....1..1..1....1..1..1....0..1..1....0..0..0....1..1..0 %e A232323 ..0..0..0....1..1..1....0..0..0....1..1..1....0..0..0....0..0..0....1..0..0 %e A232323 ..0..1..1....1..1..1....1..1..1....0..0..0....0..0..0....0..1..1....1..1..1 %e A232323 ..1..1..0....0..0..1....0..0..0....0..0..0....1..1..0....1..1..0....1..0..0 %e A232323 ..1..0..0....0..1..1....0..1..0....0..0..0....1..0..1....0..0..0....0..1..1 %e A232323 ..1..1..0....1..0..0....1..0..1....1..1..1....1..1..1....1..1..1....1..1..0 %e A232323 ..1..0..0....0..1..1....0..1..1....1..1..1....1..1..1....1..0..0....1..0..0 %K A232323 nonn %O A232323 1,1 %A A232323 _R. H. Hardin_, Nov 22 2013