

A058131


Number of commutative monoids (commutative semigroups with identity) of order n.


2




OFFSET

0,3


REFERENCES

S. Wolfram, A New Kind of Science. Champaign, IL: Wolfram Media, p. 952, 2002.


LINKS

Table of n, a(n) for n=0..7.
Remigiusz Durka, Kamil Grela, On the number of possible resonant algebras, arXiv:1911.12814 [hepth], 2019.
Eric Postpischil, Posting to sci.math newsgroup, May 21 1990
Eric Weisstein's World of Mathematics, Commutative Monoid
Eric Weisstein's World of Mathematics, Additive Cellular Automaton
Index entries for sequences related to monoids


CROSSREFS

Sequence in context: A150026 A150027 A277969 * A222055 A228569 A204328
Adjacent sequences: A058128 A058129 A058130 * A058132 A058133 A058134


KEYWORD

nonn,more


AUTHOR

Christian G. Bower, Nov 13 2000


EXTENSIONS

a(0) prepended by Jianing Song, Oct 26 2019


STATUS

approved



