Number of n X n 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
A269029
Number of n X n 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
Terms
- a(0) =0a(1) =24a(2) =348a(3) =18384a(4) =1326576a(5) =208867428a(6) =63310818360
External references
- oeis: A269029