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A323787 Number of non-isomorphic multiset partitions of strict multiset partitions of weight n. 17
1, 1, 4, 14, 56, 219, 1001, 4588 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
The weight of an atom is 1, and the weight of a multiset is the sum of weights of its elements, counting multiplicity.
LINKS
EXAMPLE
Non-isomorphic representatives of the a(1) = 1 through a(3) = 14 multiset partitions:
{{1}} {{11}} {{111}}
{{12}} {{112}}
{{1}{2}} {{123}}
{{1}}{{2}} {{1}{11}}
{{1}{12}}
{{1}{23}}
{{2}{11}}
{{1}}{{11}}
{{1}}{{12}}
{{1}}{{23}}
{{1}{2}{3}}
{{2}}{{11}}
{{1}}{{2}{3}}
{{1}}{{2}}{{3}}
CROSSREFS
Sequence in context: A304977 A143406 A329777 * A132837 A259808 A149491
KEYWORD
nonn,more
AUTHOR
Gus Wiseman, Jan 27 2019
STATUS
approved

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Last modified March 19 07:04 EDT 2024. Contains 370953 sequences. (Running on oeis4.)