Number of n X n binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.
A268880
Number of n X n binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.
Terms
- a(0) =0a(1) =5a(2) =84a(3) =4133a(4) =317966a(5) =55491832a(6) =19876401224
External references
- oeis: A268880