The number of Feynman graphs in phi^3 theory with 2n vertices, 2 external legs.
A352175
The number of Feynman graphs in phi^3 theory with 2n vertices, 2 external legs.
Terms
- a(0) =1a(1) =5a(2) =30a(3) =186a(4) =1276a(5) =9828a(6) =86279a(7) =866474a(8) =9924846a(9) =128592118a(10) =1864888539a(11) =29950693288a(12) =527584198445
External references
- oeis: A352175