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A030453 Number of linearly ordered Abelian monoids of size n (semi-groups with greatest element of the corresponding chain as neutral element); triangular norms on an n-chain. +0
2
1, 1, 2, 6, 22, 94, 451, 2386, 13775, 86417, 590489, 4446029, 37869449, 382549464 (list; graph; listen)
OFFSET

1,3

LINKS

Bernard de Baets, Home page

Index entries for sequences related to monoids

CROSSREFS

Sequence in context: A150274 A109317 A109153 this_sequence A001861 A049526 A093793

Adjacent sequences: A030450 A030451 A030452 this_sequence A030454 A030455 A030456

KEYWORD

nonn,hard,nice

AUTHOR

Bernard De Baets (Bernard.DeBaets(AT)rug.ac.be)

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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