A318369 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A318369

Number of non-isomorphic set multipartitions (multisets of sets) of the multiset of prime indices of n.

1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 2, 1, 1, 2, 1, 2, 2, 2, 1, 2, 1, 2, 1, 2, 1, 3, 1, 1, 2, 2, 2, 3, 1, 2, 2, 2, 1, 3, 1, 2, 2, 2, 1, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 5, 1, 2, 2, 1, 2, 3, 1, 2, 2, 3, 1, 3, 1, 2, 2, 2, 2, 3, 1, 2, 1, 2, 1, 5, 2, 2, 2

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,6

LINKS

Table of n, a(n) for n=1..87.

EXAMPLE

Non-isomorphic representatives of the a(180) = 7 set multipartitions of {1,1,2,2,3}:

{{1,2},{1,2,3}}

{{1},{2},{1,2,3}}

{{1},{1,2},{2,3}}

{{3},{1,2},{1,2}}

{{1},{1},{2},{2,3}}