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A030259 Number of nonisomorphic commutative idempotent groupoids with a nontrivial symmetry. +0
2
0, 0, 0, 4, 38, 1894 (list; graph; listen)
OFFSET

0,4
LINKS

Index entries for sequences related to groupoids

CROSSREFS

A030257 - A030258.

Sequence in context: A001187 A093377 A131591 this_sequence A018860 A016484 A106127

Adjacent sequences: A030256 A030257 A030258 this_sequence A030260 A030261 A030262

KEYWORD

nonn,more

AUTHOR

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

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

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