Number of n X n 0..1 arrays with every element equal to 1, 2, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.
A299568
Number of n X n 0..1 arrays with every element equal to 1, 2, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =3a(2) =15a(3) =78a(4) =766a(5) =17389a(6) =784334a(7) =46965400a(8) =5736969146
External references
- oeis: A299568