Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303010
Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =8a(2) =68a(3) =1047a(4) =27719a(5) =1298140a(6) =121524556a(7) =18974341664
External references
- oeis: A303010