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A256035
Number of idempotent basis elements in partition monoid P_n.
0
1, 1, 6, 59, 807, 14102, 301039, 7618613, 223586932, 7482796089, 281882090283
OFFSET
0,3
LINKS
I. Dolinka, J. East, A. Evangelou, D. FitzGerald, N. Ham, et al., Enumeration of idempotents in diagram semigroups and algebras, arXiv preprint arXiv:1408.2021 [math.GR], 2014. See Table 3.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Mar 14 2015
STATUS
approved