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A030261
Number of nonisomorphic commutative groupoids with no idempotents and no symmetry.
2
1, 0, 1, 35, 13776, 83306272
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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:
A202066
A271071
A249889
*
A345675
A007102
A196542
Adjacent sequences:
A030258
A030259
A030260
*
A030262
A030263
A030264
KEYWORD
nonn
,
more
AUTHOR
Christian G. Bower
STATUS
approved
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Last modified July 30 23:49 EDT 2024. Contains 374771 sequences. (Running on oeis4.)