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A058110 Semigroups of order n with 2 idempotents. 0
3, 9, 50, 309, 2806, 58583 (list; graph; refs; listen; history; internal format)
OFFSET

2,1

LINKS

Index entries for sequences related to semigroups

CROSSREFS

Column 2 of A058108.

Sequence in context: A190009 A012063 A036751 * A171951 A106329 A193521

Adjacent sequences:  A058107 A058108 A058109 * A058111 A058112 A058113

KEYWORD

nonn,hard

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Nov 09 2000

EXTENSIONS

Updated Feb 19 2001

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Last modified February 13 17:55 EST 2012. Contains 205525 sequences.