A030261 - OEIS

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A030261

Number of nonisomorphic commutative groupoids with no idempotents and no symmetry.

1, 0, 1, 35, 13776, 83306272

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,4

LINKS

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

Index entries for sequences related to groupoids

CROSSREFS

Sequence in context: A202066 A271071 A249889 * A345675 A007102 A196542

Adjacent sequences: A030258 A030259 A030260 * A030262 A030263 A030264

KEYWORD

nonn,more

AUTHOR

Christian G. Bower

STATUS

approved