Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302883
Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =2a(2) =37a(3) =238a(4) =20937a(5) =3452246a(6) =2899297652
External references
- oeis: A302883