Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.
A298541
Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =4a(2) =109a(3) =4771a(4) =575754a(5) =173576070a(6) =128132389259
External references
- oeis: A298541