Sum of the root degrees over all non-crossing connected graphs on n nodes on a circle (by root we mean a distinguished node).
A143023
Sum of the root degrees over all non-crossing connected graphs on n nodes on a circle (by root we mean a distinguished node).
Terms
- a(0) =1a(1) =6a(2) =41a(3) =306a(4) =2422a(5) =19980a(6) =169941a(7) =1479786a(8) =13127114a(9) =118217268a(10) =1077955034a(11) =9932655348a(12) =92342765868a(13) =865126386072
External references
- oeis: A143023