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A220585 Equals one maps: number of 7Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 7Xn array.

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%I A220585 #5 Jul 23 2025 01:15:30
%S A220585 1,8192,22775,26616961,1120269376,166807007000,12835487766480
%N A220585 Equals one maps: number of 7Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 7Xn array.
%C A220585 Row 7 of A220579
%e A220585 Some solutions for n=3
%e A220585 ..0..0..0....1..0..0....1..0..0....1..0..1....0..0..0....1..1..0....0..1..0
%e A220585 ..0..0..0....0..1..0....0..1..0....1..0..0....0..1..1....0..1..0....0..1..0
%e A220585 ..0..1..0....0..1..0....0..1..1....0..0..0....1..0..1....0..0..0....0..0..0
%e A220585 ..0..1..0....0..1..1....1..1..0....0..0..1....1..1..1....0..0..1....0..0..1
%e A220585 ..0..1..0....1..0..0....0..1..0....1..0..1....1..0..0....1..1..1....1..1..1
%e A220585 ..0..0..1....0..0..0....0..1..1....1..1..1....0..1..0....1..0..0....1..1..0
%e A220585 ..1..1..0....0..1..1....1..0..0....1..0..0....0..1..0....0..1..1....0..0..0
%K A220585 nonn
%O A220585 1,2
%A A220585 _R. H. Hardin_ Dec 16 2012

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