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A030255
Number of nonisomorphic commutative groupoids with no symmetry.
2
1, 1, 4, 116, 43428, 254197133
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OFFSET
0,3
LINKS
Table of n, a(n) for n=0..5.
Index entries for sequences related to groupoids
CROSSREFS
a(n) =
A079185
(n,
A027423
(n)). Cf.
A001425
.
Sequence in context:
A198080
A272158
A194535
*
A146508
A365450
A096464
Adjacent sequences:
A030252
A030253
A030254
*
A030256
A030257
A030258
KEYWORD
nonn
,
more
AUTHOR
Christian G. Bower
STATUS
approved
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Last modified May 4 10:30 EDT 2024. Contains 372240 sequences. (Running on oeis4.)