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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 (list; graph; refs; listen; history; text; internal format)
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, 2014. See Table 3.

CROSSREFS

Cf. A060639, A256033, A256034, A225797.

Sequence in context: A024269 A224757 A114501 * A296169 A089153 A075136

Adjacent sequences:  A256032 A256033 A256034 * A256036 A256037 A256038

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Mar 14 2015

STATUS

approved

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Last modified March 25 22:28 EDT 2019. Contains 321477 sequences. (Running on oeis4.)