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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.

A183525 Number of nX8 0..2 arrays with each element equal to either the sum mod 3 of its horizontal and vertical neighbors or the sum mod 3 of its diagonal and antidiagonal neighbors.

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%I A183525 #6 Jul 22 2025 09:04:00
%S A183525 63,8673,215451,11678037,728459961
%N A183525 Number of nX8 0..2 arrays with each element equal to either the sum mod 3 of its horizontal and vertical neighbors or the sum mod 3 of its diagonal and antidiagonal neighbors.
%C A183525 Column 8 of A183526
%e A183525 Some solutions for 3X8
%e A183525 ..0..2..2..2..1..0..0..1....0..1..1..1..0..1..1..0....0..0..0..1..0..0..1..0
%e A183525 ..1..0..1..2..2..1..1..2....2..1..2..0..1..2..0..0....2..0..2..1..1..2..0..2
%e A183525 ..0..2..0..0..2..0..1..0....0..1..0..0..2..0..2..2....1..2..1..2..0..1..0..2
%K A183525 nonn
%O A183525 1,1
%A A183525 _R. H. Hardin_ Jan 05 2011

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