A030271 Number of nonisomorphic groupoids with 1 idempotent and no symmetry.

1, 4, 1431, 75491208

Offset

1,2

Links

Table of n, a(n) for n=1..4.

Index entries for sequences related to groupoids

Crossrefs

Sequence in context: A278844 A036107 A201390 * A301576 A377650 A160088

Adjacent sequences: A030268 A030269 A030270 * A030272 A030273 A030274

Keyword

nonn,more

Author

Christian G. Bower

Status

approved