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%I #3 Dec 24 2012 17:36:36
%S 1,176,3299,61597,1017676,16524320,265639495,4258349242
%N Equals one maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 4Xn array
%C Row 4 of A220916
%e Some solutions for n=3
%e ..1..1..0....1..0..0....1..0..1....0..1..0....1..0..0....1..0..1....1..0..0
%e ..0..0..1....0..0..1....1..1..0....1..0..0....1..0..1....0..1..1....1..0..0
%e ..0..0..1....0..1..1....1..1..1....1..0..1....1..1..0....0..1..1....0..0..0
%e ..1..0..1....1..1..0....0..1..0....1..1..0....1..1..0....0..1..0....1..1..0
%K nonn
%O 1,2
%A _R. H. Hardin_ Dec 24 2012