Number of (n+1)X(3+1) 0..3 arrays with every 2X2 subblock summing to 5 6 or 7.
A251376
Number of (n+1)X(3+1) 0..3 arrays with every 2X2 subblock summing to 5 6 or 7.
Terms
- a(0) =9124a(1) =385704a(2) =17309672a(3) =796635224a(4) =37078015004
External references
- oeis: A251376