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A322117
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Number of non-isomorphic blobs (2-connected weak antichains) of multisets of weight n.
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6
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1, 1, 3, 4, 8, 8, 21, 27, 79, 185, 554
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OFFSET
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0,3
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LINKS
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EXAMPLE
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Non-isomorphic representatives of the a(1) = 1 through a(6) = 21 blobs:
(1) (11) (111) (1111) (11111) (111111)
(12) (122) (1122) (11222) (111222)
(1)(1) (123) (1222) (12222) (112222)
(1)(1)(1) (1233) (12233) (112233)
(1234) (12333) (122222)
(11)(11) (12344) (122333)
(12)(12) (12345) (123333)
(1)(1)(1)(1) (1)(1)(1)(1)(1) (123344)
(123444)
(123455)
(123456)
(111)(111)
(112)(122)
(122)(122)
(123)(123)
(123)(233)
(134)(234)
(11)(11)(11)
(12)(12)(12)
(12)(13)(23)
(1)(1)(1)(1)(1)(1)
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CROSSREFS
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Cf. A002218, A007718, A013922, A275307, A286520, A293994, A304118, A304887, A319719, A319721, A322110, A322118.
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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