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A286867
Number of idempotents in the twisted planar partition monoid PP_n^tau.
1
1, 1, 6, 44, 362, 3226, 30488, 301460, 3090020, 32618046, 345515557
OFFSET
0,3
COMMENTS
Values were computed using the Semigroups package for GAP.
LINKS
Igor Dolinka, James East, Athanasios Evangelou, Desmond FitzGerald, Nicholas Ham, James Hyde, Nicholas Loughlin, Idempotent Statistics of the Motzkin and Jones Monoids, arXiv:1507.04838 [math.CO], 2015-2016.
CROSSREFS
Sequence in context: A052204 A147688 A090442 * A361649 A084965 A203159
KEYWORD
nonn,more
AUTHOR
James East, Oct 05 2017
STATUS
approved