Number of nX4 0..5 arrays with some element plus some horizontally or vertically adjacent neighbor totalling five exactly once.
A269763
Number of nX4 0..5 arrays with some element plus some horizontally or vertically adjacent neighbor totalling five exactly once.
Terms
- a(0) =450a(1) =524160a(2) =326697720a(3) =170119348800
External references
- oeis: A269763