Number of n X n 0..5 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling five exactly once.
A269881
Number of n X n 0..5 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling five exactly once.
Terms
- a(0) =0a(1) =432a(2) =943488a(3) =16086672048
External references
- oeis: A269881