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A030256 Number of nonisomorphic commutative groupoids with a nontrivial symmetry. +0
1
0, 0, 0, 13, 540, 232767 (list; graph; listen)
OFFSET

0,4
LINKS

Index entries for sequences related to groupoids

CROSSREFS

A001425 - A030255.

Sequence in context: A116114 A095883 A139168 this_sequence A023332 A143601 A050286

Adjacent sequences: A030253 A030254 A030255 this_sequence A030257 A030258 A030259

KEYWORD

nonn,more

AUTHOR

Christian G. Bower (bowerc(AT)usa.net)

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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