A030242 Number of n-point nonisomorphic relations with no symmetry.

1, 2, 6, 70, 2464, 268266

Offset

0,2

Links

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

Crossrefs

Sequence in context: A156458 A244494 A136268 * A037293 A129785 A000896

Adjacent sequences: A030239 A030240 A030241 * A030243 A030244 A030245

Keyword

nonn,more

Author

Christian G. Bower

Status

approved