Late-growing permutations: number of permutations of 3 indistinguishable copies of 1..n with every partial sum <= the same partial sum averaged over all permutations.
A147684
Late-growing permutations: number of permutations of 3 indistinguishable copies of 1..n with every partial sum <= the same partial sum averaged over all permutations.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =420a(4) =40350a(5) =19369350a(6) =9212531290
External references
- oeis: A147684