Number of n X n 0..1 arrays with each 1 adjacent to 2, 3 or 4 king-move neighboring 1's.
A296820
Number of n X n 0..1 arrays with each 1 adjacent to 2, 3 or 4 king-move neighboring 1's.
Terms
- a(0) =1a(1) =6a(2) =94a(3) =2272a(4) =510086a(5) =267542809a(6) =364592446431
External references
- oeis: A296820