Number of n X n 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.
A269090
Number of n X n 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.
Terms
- a(0) =0a(1) =96a(2) =31296a(3) =37963968a(4) =211625837280
External references
- oeis: A269090