Sum over the genera g of the number of immersions of an unoriented circle with n crossings in an unoriented surface of genus g.
A260912
Sum over the genera g of the number of immersions of an unoriented circle with n crossings in an unoriented surface of genus g.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =86a(4) =894a(5) =14715a(6) =313364a(7) =8139398a(8) =245237925a(9) =8382002270a(10) =319994166042
External references
- oeis: A260912