Number of n X 2 0..5 arrays with some element plus some horizontally or vertically adjacent neighbor totalling five exactly once.
A269761
Number of n X 2 0..5 arrays with some element plus some horizontally or vertically adjacent neighbor totalling five exactly once.
Terms
- a(0) =6a(1) =480a(2) =17520a(3) =524160a(4) =14288400a(5) =368958240a(6) =9195061680a(7) =223482006720
External references
- oeis: A269761