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 A293994 Number of unlabeled multiset clutters of weight n. 31
 1, 1, 2, 3, 7, 13, 39, 88, 265 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS A multiset clutter is a connected antichain of finite multisets. The weight of a multiset clutter is the sum of cardinalities (counting multiplicity) of its edges. LINKS Table of n, a(n) for n=0..8. EXAMPLE Non-isomorphic representatives of the a(5) = 13 multiset clutters are: ((11111)), ((11112)), ((11122)), ((11123)), ((11223)), ((11234)), ((12345)), ((11)(122)), ((11)(123)), ((12)(111)), ((12)(113)), ((12)(134)), ((13)(122)). CROSSREFS Cf. A007716, A048143, A286520, A293607, A293993. Sequence in context: A345247 A013917 A371181 * A196419 A056893 A051130 Adjacent sequences: A293991 A293992 A293993 * A293995 A293996 A293997 KEYWORD nonn,more AUTHOR Gus Wiseman, Oct 21 2017 STATUS approved

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Last modified May 18 15:59 EDT 2024. Contains 372664 sequences. (Running on oeis4.)