Number of prime alternating tangles (or knots) of type Gamma_2 with two connected components.
A067645
Number of prime alternating tangles (or knots) of type Gamma_2 with two connected components.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =3a(4) =9a(5) =21a(6) =101a(7) =346a(8) =1576a(9) =7040a(10) =31556a(11) =153916a(12) =724758a(13) =3610768a(14) =17853814a(15) =90220450a(16) =460221672a(17) =2365627740a(18) =12300901598
External references
- oeis: A067645