Number of bicolored immersions of unoriented circle into oriented surface with n double points, up to stable geotopy.
A268559
Number of bicolored immersions of unoriented circle into oriented surface with n double points, up to stable geotopy.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =14a(4) =54a(5) =420a(6) =3886a(7) =46470a(8) =645524a(9) =10328214a(10) =185800748a(11) =3716014090a(12) =81749732156
External references
- oeis: A268559