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A030259
Number of nonisomorphic commutative idempotent groupoids with a nontrivial symmetry.
1
0, 0, 0, 4, 38, 1894
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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
A030257
-
A030258
.
Sequence in context:
A093377
A178017
A131591
*
A218710
A286877
A018860
Adjacent sequences:
A030256
A030257
A030258
*
A030260
A030261
A030262
KEYWORD
nonn
,
more
AUTHOR
Christian G. Bower
STATUS
approved
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Last modified April 18 08:14 EDT 2024. Contains 371769 sequences. (Running on oeis4.)