Number of signed trees with n positive edges and n negative edges.
A331113
Number of signed trees with n positive edges and n negative edges.
Terms
- a(0) =1a(1) =1a(2) =9a(3) =96a(4) =1439a(5) =24758a(6) =476056a(7) =9841611a(8) =214997756a(9) =4900190330a(10) =115530636036
External references
- oeis: A331113