login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A030252 Number of nonisomorphic groupoids with no idempotents and a nontrivial symmetry. 0
0, 0, 2, 9, 15376 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..4.

Index entries for sequences related to groupoids

CROSSREFS

Cf. A030250 - A030251.

Sequence in context: A027734 A328201 A028581 * A325624 A049384 A132859

Adjacent sequences:  A030249 A030250 A030251 * A030253 A030254 A030255

KEYWORD

nonn,more

AUTHOR

Christian G. Bower

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 30 18:38 EDT 2020. Contains 334728 sequences. (Running on oeis4.)