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 A183482 #6 Jul 22 2025 08:59:42 %S A183482 63,20223,270611,15984991,1577932971,56697667073 %N A183482 Number of nX8 0..2 arrays with every element equal to either the sum mod 3 of its vertical neighbors or the sum mod 3 of its horizontal neighbors. %C A183482 Column 8 of A183483 %e A183482 Some solutions for 4X8 %e A183482 ..0..0..0..0..0..2..2..0....0..0..0..0..0..0..1..1....0..0..0..1..1..0..0..0 %e A183482 ..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..2....0..0..0..0..0..0..1..1 %e A183482 ..0..0..0..0..1..1..1..2....0..0..0..2..2..0..2..1....0..0..1..0..1..0..1..1 %e A183482 ..0..1..1..0..1..1..1..2....0..0..0..2..2..0..2..2....0..0..1..0..1..0..1..1 %K A183482 nonn %O A183482 1,1 %A A183482 _R. H. Hardin_ Jan 05 2011