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Number of n X n 0..1 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors.
0

%I #7 Apr 26 2021 14:19:33

%S 2,10,153,7697,1031105,451200772,697702378939,3293112511839389,

%T 46764849359077493872,2109508899293218313962632

%N Number of n X n 0..1 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors.

%C Diagonal of A231523.

%e Some solutions for n=4

%e ..0..0..0..0....1..0..1..1....0..1..1..1....0..0..0..0....1..0..0..0

%e ..1..0..0..0....0..0..0..0....1..0..1..1....0..0..0..1....1..0..0..1

%e ..1..1..0..1....0..0..0..0....0..0..0..1....0..0..0..0....0..0..0..0

%e ..0..0..1..1....1..1..1..0....0..1..1..0....1..1..1..0....1..1..1..0

%Y Cf. A231523.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 10 2013