No of nodes, n =12

rhod=2d=3d=4d=5d=6d=7d=8d=9d=10d=11
212182430364248546066
38121620242832364044
4691215182124273033
5---12----24-
6-6810121416182022
7-----12----
8--6-9-12-15-
9----8--12--
10--------12-
11---------12