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A058119 Number of self-converse semigroups of order n with 1 idempotent. +0
2
1, 2, 5, 18, 93, 930, 22899 (list; graph; listen)
OFFSET

1,2
LINKS

Index entries for sequences related to semigroups

CROSSREFS

Column 1 of A058118.

Sequence in context: A032273 A143522 A123310 this_sequence A075634 A007127 A005639

Adjacent sequences: A058116 A058117 A058118 this_sequence A058120 A058121 A058122

KEYWORD

nonn,hard

AUTHOR

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

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Last modified December 9 18:50 EST 2009. Contains 170568 sequences.

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