Number of "squashed-tree" graphs with n central nodes, the labeled case, not allowing the direct link between L and R.
A138560
Number of "squashed-tree" graphs with n central nodes, the labeled case, not allowing the direct link between L and R.
Terms
- a(0) =0a(1) =1a(2) =14a(3) =265a(4) =6830a(5) =230511a(6) =9813824a(7) =510662531a(8) =31637636492
External references
- oeis: A138560