Total number of interior nodes in all series-parallel networks with n labeled edges, multiple edges not allowed.
A058406
Total number of interior nodes in all series-parallel networks with n labeled edges, multiple edges not allowed.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =2a(4) =27a(5) =199a(6) =2645a(7) =34236a(8) =560742a(9) =9958754a(10) =201928954a(11) =4480386932a(12) =109410252512
External references
- oeis: A058406