Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.
A299840
Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =8a(2) =163a(3) =8245a(4) =1056001a(5) =325878154a(6) =250915415042
External references
- oeis: A299840