A030262 Number of nonisomorphic commutative groupoids with no idempotents and a nontrivial symmetry.

0, 0, 0, 3, 96, 54248

Offset

0,4

Links

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

Index entries for sequences related to groupoids

Crossrefs

A030260 - A030261.

Sequence in context: A301351 A268012 A268181 * A107173 A100494 A209554

Adjacent sequences: A030259 A030260 A030261 * A030263 A030264 A030265

Keyword

nonn,more

Author

Christian G. Bower

Status

approved