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A222938 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.

%I A222938 #5 Jul 23 2025 03:18:00
%S A222938 16,232,4096,63488,1047664,16776992,268435456,4294967296,68702202624,
%T A222938 1099511627776,17592186044416,281474975006720,4503599620030464,
%U A222938 72057490958712832,1152921504606846976,18446744073700638720
%N A222938 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 A222938 Row 4 of A222935
%e A222938 Some solutions for n=3
%e A222938 ..1..1..1....0..0..1....0..0..1....0..0..1....0..0..1....0..0..0....0..0..1
%e A222938 ..0..1..0....0..1..1....0..0..0....1..0..0....0..0..1....0..1..0....0..1..1
%e A222938 ..1..1..1....0..0..1....1..1..0....0..1..0....0..0..0....1..1..0....1..0..0
%e A222938 ..0..1..0....0..0..0....1..1..0....0..0..0....0..1..1....0..0..1....0..0..0
%K A222938 nonn
%O A222938 1,1
%A A222938 _R. H. Hardin_ Mar 09 2013