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 A319748 Number of non-isomorphic set multipartitions (multisets of sets) of weight n with empty intersection. 8
 1, 0, 1, 3, 10, 25, 72, 182, 502, 1332, 3720 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 COMMENTS The weight of a set multipartition is the sum of sizes of its parts. Weight is generally not the same as number of vertices. LINKS EXAMPLE Non-isomorphic representatives of the a(2) = 1 through a(4) = 10 set multipartitions:   {{1},{2}}   {{1},{2,3}}     {{1},{2,3,4}}              {{1},{2},{2}}    {{1,2},{3,4}}              {{1},{2},{3}}   {{1},{1},{2,3}}                              {{1},{2},{1,2}}                              {{1},{2},{3,4}}                              {{1},{3},{2,3}}                             {{1},{1},{2},{2}}                             {{1},{2},{2},{2}}                             {{1},{2},{3},{3}}                             {{1},{2},{3},{4}} CROSSREFS Cf. A007716, A049311, A281116, A283877, A316980, A317752, A317755, A317757, A319616. Cf. A319077, A319751, A319755, A319778, A319781, A319791. Sequence in context: A026985 A319919 A027227 * A027228 A026950 A095052 Adjacent sequences:  A319745 A319746 A319747 * A319749 A319750 A319751 KEYWORD nonn,more AUTHOR Gus Wiseman, Sep 27 2018 STATUS approved

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Last modified June 24 05:39 EDT 2019. Contains 324318 sequences. (Running on oeis4.)