A280888 Number of set partitions of [n] into exactly ten blocks where sizes of distinct blocks are coprime.

1, 55, 220, 13585, 2002, 365365, 732160, 52971490, 5299580, 1872409682, 99936200, 23179025870, 62214309080, 5550857869040, 12039496832, 261712025228225, 2847305553950, 449212777481325, 340010469598800, 138437940253287675, 2463591280250100, 2996433107369524875

Offset

10,2

Links

Table of n, a(n) for n=10..31.

Wikipedia, Coprime integers

Wikipedia, Partition of a set

Crossrefs

Column k=10 of A280880.

Sequence in context: A013550 A254148 A271738 * A158658 A296036 A286854

Adjacent sequences: A280885 A280886 A280887 * A280889 A280890 A280891

Keyword

nonn

Author

Alois P. Heinz, Jan 09 2017

Status

approved