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A030262 Number of nonisomorphic commutative groupoids with no idempotents and a nontrivial symmetry. +0
2
0, 0, 0, 3, 96, 54248 (list; graph; listen)
OFFSET

0,4
LINKS

Index entries for sequences related to groupoids

CROSSREFS

A030260 - A030261.

Adjacent sequences: A030259 A030260 A030261 this_sequence A030263 A030264 A030265

Sequence in context: A037113 A093009 A094085 this_sequence A107173 A100494 A057014

KEYWORD

nonn,more

AUTHOR

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

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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