Number of (n+1)X6 0..3 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.
A204307
Number of (n+1)X6 0..3 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =1166400a(1) =209106648a(2) =32895567670
External references
- oeis: A204307