Number of permutations of n indistinguishable copies of 1..4 with every partial sum <= the same partial sum averaged over all permutations.

A215562

Number of permutations of n indistinguishable copies of 1..4 with every partial sum <= the same partial sum averaged over all permutations.

Terms

    a(0) =1a(1) =7a(2) =403a(3) =40350a(4) =5223915a(5) =783353872a(6) =129141898872

External references