Number of immersions of unoriented circle into oriented sphere with 2n double points such that two different choices of orientation of the circle are related by geotopy.
A268563
Number of immersions of unoriented circle into oriented sphere with 2n double points such that two different choices of orientation of the circle are related by geotopy.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =33a(4) =249a(5) =2036a(6) =17572a(7) =157676a(8) =1457037
External references
- oeis: A268563