Number of (n+1)X(4+1) 0..3 arrays with every 2X2 subblock summing to a nonzero multiple of 3.
A251339
Number of (n+1)X(4+1) 0..3 arrays with every 2X2 subblock summing to a nonzero multiple of 3.
Terms
- a(0) =13275a(1) =189129a(2) =3014066a(3) =55048995a(4) =1151715397a(5) =27005232676a(6) =687109914883
External references
- oeis: A251339