Number of n X n 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300683
Number of n X n 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =3a(2) =53a(3) =2229a(4) =240463a(5) =67479838a(6) =48809162176
External references
- oeis: A300683