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A221069 Sum of neighbor maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their king-move neighbors in a random 0..3 nX5 array.

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%I A221069 #5 Jul 23 2025 01:40:36
%S A221069 24,168,26976,829184,17530176,811440640,25241048576
%N A221069 Sum of neighbor maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their king-move neighbors in a random 0..3 nX5 array.
%C A221069 Column 5 of A221072
%e A221069 Some solutions for n=3
%e A221069 ..1..0..0..0..1....0..1..0..0..1....0..0..1..1..0....1..0..0..0..1
%e A221069 ..1..0..0..0..1....0..1..0..1..1....1..0..1..0..1....0..0..1..0..1
%e A221069 ..1..0..1..0..1....0..0..0..1..0....0..0..1..0..1....1..0..0..0..1
%K A221069 nonn
%O A221069 1,1
%A A221069 _R. H. Hardin_ Dec 31 2012

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