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A030265 Number of nonisomorphic commutative groupoids with 1 idempotent and a nontrivial symmetry. 3
0, 0, 6, 214, 83925 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..5.

Index entries for sequences related to groupoids

CROSSREFS

A030263 - A030264.

Sequence in context: A093536 A002037 A332989 * A275567 A007221 A195802

Adjacent sequences:  A030262 A030263 A030264 * A030266 A030267 A030268

KEYWORD

nonn,more

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified November 27 21:32 EST 2020. Contains 338684 sequences. (Running on oeis4.)