Number of (n+1)X5 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.
A204226
Number of (n+1)X5 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =11100a(1) =312001a(2) =8183170a(3) =129062037a(4) =2019310610a(5) =21958547501a(6) =239090847020
External references
- oeis: A204226