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A221026 Sum of neighbor maps: log base 2 of the number of nX6 binary arrays indicating the locations of corresponding elements equal to the sum mod 2 of their horizontal, vertical and antidiagonal neighbors in a random 0..1 nX6 array.

%I A221026 #6 Jul 24 2025 19:40:53
%S A221026 6,11,17,21,30,33,42,46,54,60,66,71,75,84,90,94,100,106,113,118,125,
%T A221026 131,138,144,150,152,160,167,173,177,183,191,197,202,206,216,222,228,
%U A221026 233,239,244,251,256,262,268,276,282,285,293,300,306,312,316,324,327,336,339,347
%N A221026 Sum of neighbor maps: log base 2 of the number of nX6 binary arrays indicating the locations of corresponding elements equal to the sum mod 2 of their horizontal, vertical and antidiagonal neighbors in a random 0..1 nX6 array.
%C A221026 Column 6 of A221028
%H A221026 R. H. Hardin, <a href="/A221026/b221026.txt">Table of n, a(n) for n = 1..62</a>
%e A221026 Some solutions for n=3
%e A221026 ..0..0..0..1..1..0....1..0..0..1..0..0....1..1..0..1..0..1....0..0..1..0..0..0
%e A221026 ..0..0..1..0..0..1....0..0..0..0..1..1....0..1..0..1..1..0....0..1..0..1..0..0
%e A221026 ..1..0..0..1..0..0....0..1..0..0..1..0....0..1..0..1..0..0....1..1..1..1..0..0
%K A221026 nonn
%O A221026 1,1
%A A221026 _R. H. Hardin_ Dec 29 2012