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A220327 Equals two maps: number of nX6 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 nX6 array.

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%I A220327 #5 Jul 23 2025 01:03:41
%S A220327 12,658,29467,1335202,59893608,2680626797,119808040854,5350328821481
%N A220327 Equals two maps: number of nX6 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 nX6 array.
%C A220327 Column 6 of A220328
%e A220327 Some solutions for n=3
%e A220327 ..0..0..1..0..1..0....0..0..0..1..1..0....0..0..0..1..0..1....0..0..0..1..1..0
%e A220327 ..1..1..1..1..0..0....0..1..0..0..1..0....0..0..0..1..1..1....1..0..1..1..0..1
%e A220327 ..0..1..0..1..0..0....1..1..1..0..1..0....1..0..0..0..1..0....0..1..1..0..1..0
%K A220327 nonn
%O A220327 1,1
%A A220327 _R. H. Hardin_ Dec 10 2012

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