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.

1, 1, 5, 420, 40350, 19369350, 9212531290, 13126885205000, 17810026933803520, 55560479543584645500, 164686892656273830526336, 953018107457232657556038400

Offset: 0

Author

R. H. Hardin, May 01 2009

Keywords

• nonn

Crossrefs

Cf. A147681.

Column k=3 of A215561.

Extensions

a(0), a(11) from Alois P. Heinz, Nov 01 2014