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A030256
Number of nonisomorphic commutative groupoids with a nontrivial symmetry.
0
0, 0, 0, 13, 540, 232767
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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
A001425
-
A030255
.
Sequence in context:
A295942
A297518
A281055
*
A023332
A309204
A229263
Adjacent sequences:
A030253
A030254
A030255
*
A030257
A030258
A030259
KEYWORD
nonn
,
more
AUTHOR
Christian G. Bower
STATUS
approved
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Last modified March 29 10:59 EDT 2024. Contains 371277 sequences. (Running on oeis4.)