Number of n X n 0..1 arrays with every element unequal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
A304698
Number of n X n 0..1 arrays with every element unequal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =3a(2) =8a(3) =48a(4) =908a(5) =47440a(6) =3510334a(7) =799135415a(8) =758781064050
External references
- oeis: A304698