A147686 Late-growing permutations: number of permutations of 4 indistinguishable copies of 1..n with every partial sum <= the same partial sum averaged over all permutations.

1, 14, 6930, 5223915, 27032968200, 164401445439455, 3627155158988429250, 86733224358763671877835, 5469038805616093755410863500

Offset

1,2

Links

Table of n, a(n) for n=1..9.

Crossrefs

Cf. A147681.

Column k=4 of A215561.

Sequence in context: A060856 A030531 A206357 * A048913 A246623 A208194

Adjacent sequences: A147683 A147684 A147685 * A147687 A147688 A147689

Keyword

nonn

Author

R. H. Hardin May 01 2009

Status

approved