Number of nonroot branch nodes in all noncrossing rooted trees on n nodes on a circle.
A045737
Number of nonroot branch nodes in all noncrossing rooted trees on n nodes on a circle.
Terms
- a(0) =0a(1) =0a(2) =3a(3) =28a(4) =210a(5) =1470a(6) =9996a(7) =67032a(8) =446292a(9) =2960100a(10) =19594575a(11) =129585456a(12) =856703848a(13) =5663913528a(14) =37454912040a(15) =247778648880
External references
- oeis: A045737