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A058114
Number of asymmetric semigroups of order n with 1 idempotent.
1
1, 2, 3, 11, 112, 4398, 1181185
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..7.
Index entries for sequences related to semigroups
CROSSREFS
Column 1 of
A058113
.
Sequence in context:
A079853
A358602
A050721
*
A042337
A061482
A177854
Adjacent sequences:
A058111
A058112
A058113
*
A058115
A058116
A058117
KEYWORD
nonn
,
hard
AUTHOR
Christian G. Bower
, Nov 09 2000
EXTENSIONS
Updated Feb 19 2001
STATUS
approved
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Last modified May 5 21:49 EDT 2024. Contains 372290 sequences. (Running on oeis4.)