A030259 Number of nonisomorphic commutative idempotent groupoids with a nontrivial symmetry.

0, 0, 0, 4, 38, 1894

Offset

0,4

Links

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

Index entries for sequences related to groupoids

Crossrefs

A030257 - A030258.

Sequence in context: A093377 A178017 A131591 * A218710 A286877 A373826

Adjacent sequences: A030256 A030257 A030258 * A030260 A030261 A030262

Keyword

nonn,more

Author

Christian G. Bower

Status

approved