Number of isomorphism classes of minimal n-extensions of a kind of homeomorphism of the circle.
A069738
Number of isomorphism classes of minimal n-extensions of a kind of homeomorphism of the circle.
Terms
- a(0) =1a(1) =3a(2) =7a(3) =26a(4) =97a(5) =624a(6) =4162a(7) =34469
External references
- oeis: A069738