login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A030254 Number of nonisomorphic groupoids with 1 idempotent and a nontrivial symmetry. 0
0, 0, 9, 12664 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

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

Index entries for sequences related to groupoids

CROSSREFS

A030253 - A030271.

Sequence in context: A055320 A271717 A069501 * A206461 A258719 A292562

Adjacent sequences:  A030251 A030252 A030253 * A030255 A030256 A030257

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 January 22 07:31 EST 2022. Contains 350481 sequences. (Running on oeis4.)