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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.

A183375 Number of n X n binary arrays with no element equal to the mod 3 sum of its king-move neighbors.

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%I A183375 #8 Jul 22 2025 08:53:15
%S A183375 1,5,28,225,2767,64530,2952294,238729120,34520238211
%N A183375 Number of n X n binary arrays with no element equal to the mod 3 sum of its king-move neighbors.
%C A183375 Diagonal of A183380
%e A183375 Some solutions for 5X5
%e A183375 ..1..1..0..0..1....0..0..0..1..0....1..1..0..1..1....1..0..0..0..0
%e A183375 ..0..1..0..0..0....1..0..1..0..1....1..0..1..1..0....0..0..0..1..0
%e A183375 ..0..1..0..1..0....1..1..1..0..1....0..0..1..1..0....1..0..0..0..0
%e A183375 ..1..1..0..0..0....0..1..1..1..1....0..0..1..1..1....0..0..0..0..0
%e A183375 ..0..0..0..1..0....0..1..0..0..1....0..1..1..0..1....0..1..0..0..1
%K A183375 nonn
%O A183375 1,2
%A A183375 _R. H. Hardin_ Jan 04 2011

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