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A058120 Number of self-converse semigroups of order n with 2 idempotents. +0
1
1, 5, 24, 123, 754, 6721 (list; graph; listen)
OFFSET

2,2
LINKS

Index entries for sequences related to semigroups

CROSSREFS

Column 2 of A058118.

Sequence in context: A163610 A055825 A006326 this_sequence A000349 A036919 A020067

Adjacent sequences: A058117 A058118 A058119 this_sequence A058121 A058122 A058123

KEYWORD

nonn,hard

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Nov 10 2000

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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