Total number of edges in all connected unlabeled graphs on n nodes.

A094602

Total number of edges in all connected unlabeled graphs on n nodes.

Terms

    a(0) =0a(1) =1a(2) =5a(3) =25a(4) =130a(5) =951a(6) =9552a(7) =160220a(8) =4756703a(9) =264964172a(10) =27746801125

External references