Number of immersions of the oriented circle into the oriented plane with n double points.
A008980
Number of immersions of the oriented circle into the oriented plane with n double points.
Terms
- a(0) =2a(1) =3a(2) =10a(3) =39a(4) =204a(5) =1262a(6) =8984a(7) =67959a(8) =544504a(9) =4535030a(10) =39004772a(11) =344217402a(12) =3103896536
External references
- oeis: A008980