A256035 Number of idempotent basis elements in partition monoid P_n.

1, 1, 6, 59, 807, 14102, 301039, 7618613, 223586932, 7482796089, 281882090283

Offset

0,3

Links

Table of n, a(n) for n=0..10.

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

Cf. A060639, A256033, A256034, A225797.

Sequence in context: A354864 A114501 A369513 * A296169 A089153 A075136

Adjacent sequences: A256032 A256033 A256034 * A256036 A256037 A256038

Keyword

nonn,more

Author

N. J. A. Sloane, Mar 14 2015

Status

approved