Number of rooted noncrossing trees with n nodes such that root has degree 1 and the child of the root has degree at least 2.
A030983
Number of rooted noncrossing trees with n nodes such that root has degree 1 and the child of the root has degree at least 2.
Terms
- a(0) =0a(1) =3a(2) =16a(3) =83a(4) =442a(5) =2420a(6) =13566a(7) =77539a(8) =450340a(9) =2650635a(10) =15777450a(11) =94815732a(12) =574518536a(13) =3506232184a(14) =21533144486a(15) =132980242755a(16) =825304177544
External references
- oeis: A030983