Number of nX5 0..2 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
A203457
Number of nX5 0..2 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Terms
- a(0) =1a(1) =63a(2) =3748a(3) =143936a(4) =5660631a(5) =231588325a(6) =9441977403a(7) =385259518988
External references
- oeis: A203457