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A030258
Number of nonisomorphic commutative idempotent groupoids with no symmetry.
2
1, 1, 1, 3, 164, 80461
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OFFSET
0,4
LINKS
Table of n, a(n) for n=0..5.
Index entries for sequences related to groupoids
CROSSREFS
Sequence in context:
A212845
A212806
A368600
*
A154737
A285488
A112896
Adjacent sequences:
A030255
A030256
A030257
*
A030259
A030260
A030261
KEYWORD
nonn
,
more
AUTHOR
Christian G. Bower
STATUS
approved
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Last modified March 29 05:48 EDT 2024. Contains 371265 sequences. (Running on oeis4.)