Total number of interior nodes in all essentially series series-parallel networks with n labeled edges, multiple edges allowed.

A058478

Total number of interior nodes in all essentially series series-parallel networks with n labeled edges, multiple edges allowed.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =5a(4) =46a(5) =534a(6) =7596a(7) =127756a(8) =2479856a(9) =54560512a(10) =1341716960a(11) =36468949824

External references