Number of vertices of degree 1 in all non-crossing connected graphs on n points on a circle.
A143021
Number of vertices of degree 1 in all non-crossing connected graphs on n points on a circle.
Terms
- a(0) =2a(1) =6a(2) =36a(3) =270a(4) =2244a(5) =19740a(6) =179880a(7) =1678446a(8) =15927780a(9) =153055188a(10) =1485010488a(11) =14518525164a(12) =142821228648
External references
- oeis: A143021