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A030262 Number of nonisomorphic commutative groupoids with no idempotents and a nontrivial symmetry. 1
0, 0, 0, 3, 96, 54248 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..5.

Index entries for sequences related to groupoids

CROSSREFS

A030260 - A030261.

Sequence in context: A301351 A268012 A268181 * A107173 A100494 A209554

Adjacent sequences:  A030259 A030260 A030261 * A030263 A030264 A030265

KEYWORD

nonn,more

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified May 19 08:55 EDT 2022. Contains 353826 sequences. (Running on oeis4.)