Number of immersions of the oriented circle into the oriented plane with n double points and index n-1.
A008984
Number of immersions of the oriented circle into the oriented plane with n double points and index n-1.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =10a(4) =35a(5) =133a(6) =538a(7) =2144a(8) =8643a(9) =34690a(10) =139122a(11) =556618
External references
- oeis: A008984