A030265 Number of nonisomorphic commutative groupoids with 1 idempotent and a nontrivial symmetry.

0, 0, 6, 214, 83925

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: A071367 A332989 A370128 * A275567 A007221 A195802

Adjacent sequences: A030262 A030263 A030264 * A030266 A030267 A030268

Keyword

nonn,more

Author

Christian G. Bower

Status

approved