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A221355 Sum of neighbor maps: log base 2 of the number of n X n binary arrays indicating the locations of corresponding elements equal to the sum mod 2 of their horizontal, diagonal and antidiagonal neighbors in a random 0..1 n X n array 0

%I

%S 1,4,9,12,24,30,49,58,73

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

%C Diagonal of A221356

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 12 2013

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Last modified December 5 03:59 EST 2021. Contains 349530 sequences. (Running on oeis4.)