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%I #3 Mar 09 2013 10:59:31
%S 16,232,4096,63488,1047664,16776992,268435456,4294967296,68702202624,
%T 1099511627776,17592186044416,281474975006720,4503599620030464,
%U 72057490958712832,1152921504606846976,18446744073700638720
%N Sum of neighbor maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their horizontal and antidiagonal neighbors in a random 0..3 4Xn array
%C Row 4 of A222935
%e Some solutions for n=3
%e ..1..1..1....0..0..1....0..0..1....0..0..1....0..0..1....0..0..0....0..0..1
%e ..0..1..0....0..1..1....0..0..0....1..0..0....0..0..1....0..1..0....0..1..1
%e ..1..1..1....0..0..1....1..1..0....0..1..0....0..0..0....1..1..0....1..0..0
%e ..0..1..0....0..0..0....1..1..0....0..0..0....0..1..1....0..0..1....0..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 09 2013