%I #3 Jan 04 2013 04:37:37
%S 4,107,2648,51924,928133,15638551,256020803
%N Equals two maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, vertical and antidiagonal neighbors in a random 0..2 nX4 array
%C Column 4 of A221188
%e Some solutions for n=3
%e ..1..1..1..0....1..1..0..0....0..1..0..1....1..0..1..0....1..0..0..0
%e ..0..0..0..1....1..0..0..1....0..1..0..0....0..1..0..0....1..0..1..1
%e ..0..0..1..0....1..0..0..1....0..1..0..0....0..1..0..1....1..0..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 04 2013
|