Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303191
Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =46a(4) =523a(5) =8250a(6) =164295a(7) =6303961a(8) =332058205a(9) =27569938407
External references
- oeis: A303191