Number of achiral immersions of oriented circle into oriented sphere with 2n double points.
A268565
Number of achiral immersions of oriented circle into oriented sphere with 2n double points.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =15a(4) =97a(5) =592a(6) =4488a(7) =35314a(8) =295379
External references
- oeis: A268565