Total number of leaves (nodes of vertex degree 1) in all graphs of n nodes.

A055540

Total number of leaves (nodes of vertex degree 1) in all graphs of n nodes.

Terms

    a(0) =0a(1) =2a(2) =4a(3) =14a(4) =38a(5) =153a(6) =766a(7) =6259a(8) =88064a(9) =2324157a(10) =116563882a(11) =11060411527

External references