Number of (n+1)X(4+1) 0..3 arrays with every 2X2 subblock summing to 2 3 4 5 6 7 8 9 or 10.
A251520
Number of (n+1)X(4+1) 0..3 arrays with every 2X2 subblock summing to 2 3 4 5 6 7 8 9 or 10.
Terms
- a(0) =904734a(1) =811863390a(2) =727704325306
External references
- oeis: A251520