A058175 Triangle: Number of quasigroups of order n with k idempotents.

1, 0, 1, 0, 1, 0, 1, 3, 0, 1, 9, 18, 6, 1, 1, 420, 638, 264, 77, 8, 4, 367590, 469675, 227168, 57788, 7712, 580, 18

Offset

0,8

Links

Table of n, a(n) for n=0..27.

Index entries for sequences related to quasigroups

Example

1; 0,1; 0,1,0; 1,3,0,1; 9,18,6,1,1; ...

Crossrefs

Row sums give A057991.

Sequence in context: A222060 A256549 A211608 * A353010 A112906 A137375

Adjacent sequences: A058172 A058173 A058174 * A058176 A058177 A058178

Keyword

nonn,tabl,more

Author

Christian G. Bower, Nov 20 2000

Status

approved