Number of n X n 0..1 arrays with every element equal to 0, 2, 3 or 4 king-move adjacent elements, with upper left element zero.
A297908
Number of n X n 0..1 arrays with every element equal to 0, 2, 3 or 4 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =5a(2) =10a(3) =268a(4) =10809a(5) =1084333a(6) =362523451a(7) =267640924872
External references
- oeis: A297908