Number of nX7 0..2 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.
A268903
Number of nX7 0..2 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.
Terms
- a(0) =576a(1) =34344a(2) =1585800a(3) =66210264a(4) =2611960344a(5) =99308573208
External references
- oeis: A268903