Number of n X n 0..1 arrays with every element unequal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
A305009
Number of n X n 0..1 arrays with every element unequal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =3a(2) =14a(3) =42a(4) =2715a(5) =28477a(6) =640900a(7) =108290760a(8) =7783586346
External references
- oeis: A305009