login
Equals one maps: number of n X n binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 n X n array
0

%I #5 Dec 18 2015 18:18:24

%S 1,8,91,17505,3162375,4239598056,12835487766480

%N Equals one maps: number of n X n binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 n X n array

%C Diagonal of A220579

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Dec 16 2012