Number of (n+1)X7 0..3 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.
A204308
Number of (n+1)X7 0..3 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =7157160a(1) =2204400210a(2) =592113170884
External references
- oeis: A204308