%I
%S 16,256,3772,63200,1048576,16777216,268281856,4294967296,68702508544,
%T 1099511627776,17592133540864,281474976710656,4503599627370496
%N Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 nX4 array
%C Column 4 of A221666
%e Some solutions for n=3
%e ..0..1..0..0....0..1..1..0....0..1..0..0....1..1..0..0....0..0..0..1
%e ..1..0..1..1....1..1..0..1....1..1..0..0....0..0..0..1....0..0..0..1
%e ..0..1..0..1....1..1..0..1....0..1..1..0....1..1..1..1....1..1..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 21 2013
