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A322117 Number of non-isomorphic blobs (2-connected weak antichains) of multisets of weight n. 6
1, 1, 3, 4, 8, 8, 21, 27, 79, 185, 554 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
Gus Wiseman, Every Clutter Is a Tree of Blobs, The Mathematica Journal, Vol. 19, 2017.
EXAMPLE
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)
CROSSREFS
Sequence in context: A047968 A358835 A358833 * A181778 A245026 A125219
KEYWORD
nonn,more
AUTHOR
Gus Wiseman, Nov 26 2018
STATUS
approved

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Last modified April 21 00:22 EDT 2024. Contains 371850 sequences. (Running on oeis4.)