A030252 - OEIS

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A030252

Number of nonisomorphic groupoids with no idempotents and a nontrivial symmetry.

1

0, 0, 2, 9, 15376

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,3

LINKS

Table of n, a(n) for n=0..4.

Index entries for sequences related to groupoids

CROSSREFS

Cf. A030250 - A030251.

Sequence in context: A027734 A328201 A028581 * A325624 A049384 A132859

Adjacent sequences: A030249 A030250 A030251 * A030253 A030254 A030255

KEYWORD

nonn,more

AUTHOR

Christian G. Bower

STATUS

approved