|
| |
|
|
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 [hep-th], 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
|
| |
|
|
