A030264 Number of nonisomorphic commutative groupoids with 1 idempotent and no symmetry.

1, 2, 51, 18330, 104124850

Offset

1,2

Links

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

Index entries for sequences related to groupoids

Crossrefs

Sequence in context: A210907 A099368 A132492 * A129742 A080921 A053455

Adjacent sequences: A030261 A030262 A030263 * A030265 A030266 A030267

Keyword

nonn,more

Author

Christian G. Bower

Status

approved