Late-growing permutations: number of permutations of 1..n with every partial sum <= the same partial sum averaged over all permutations.
A147681
Late-growing permutations: number of permutations of 1..n with every partial sum <= the same partial sum averaged over all permutations.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =7a(5) =35a(6) =139a(7) =1001a(8) =5701a(9) =53109a(10) =402985a(11) =4605271a(12) =43665667a(13) =589809987a(14) =6735960079a(15) =104899483845
External references
- oeis: A147681