Number of unoriented series-parallel networks with n colored elements using exactly 2 colors.
A339281
Number of unoriented series-parallel networks with n colored elements using exactly 2 colors.
Terms
- a(0) =0a(1) =2a(2) =14a(3) =84a(4) =522a(5) =3426a(6) =23404a(7) =165417a(8) =1197934a(9) =8847201a(10) =66359672a(11) =504180138a(12) =3872043674a(13) =30011312118a(14) =234460670790
External references
- oeis: A339281