Number of n X n 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302723
Number of n X n 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =3a(2) =22a(3) =89a(4) =1307a(5) =20842a(6) =532511a(7) =17200486a(8) =683140749a(9) =61552556640
External references
- oeis: A302723