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A058119
Number of self-converse semigroups of order n with 1 idempotent.
1
1, 2, 5, 18, 93, 930, 22899
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..7.
Index entries for sequences related to semigroups
CROSSREFS
Column 1 of A058118.
Sequence in context: A143522 A217389 A123310 * A335547 A367012 A075441
Adjacent sequences: A058116 A058117 A058118 * A058120 A058121 A058122
KEYWORD
nonn,hard
AUTHOR
Christian G. Bower, Nov 10 2000
STATUS
approved

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Last modified November 16 20:19 EST 2024. Contains 377805 sequences.
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