Number of labeled series-parallel graphs with n edges.
A048172
Number of labeled series-parallel graphs with n edges.
Terms
- a(0) =1a(1) =3a(2) =19a(3) =195a(4) =2791a(5) =51303a(6) =1152019a(7) =30564075a(8) =935494831a(9) =32447734143
External references
- oeis: A048172