Number of (n+1)X(2+1) 0..3 arrays with every 2X2 subblock summing to 3 4 5 6 7 8 or 9.
A251501
Number of (n+1)X(2+1) 0..3 arrays with every 2X2 subblock summing to 3 4 5 6 7 8 or 9.
Terms
- a(0) =3250a(1) =170038a(2) =8888108a(3) =464687066a(4) =24294592462
External references
- oeis: A251501