Number of (n+1)X4 0..3 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.
A204305
Number of (n+1)X4 0..3 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =22500a(1) =1077978a(2) =47834122a(3) =1271789125a(4) =32895567670a(5) =592113170884
External references
- oeis: A204305