A036630 Number of 4-ary rooted trees with n nodes and height exactly 6.

0, 0, 0, 0, 0, 0, 1, 5, 19, 61, 175, 469, 1199, 2961, 7121, 16784, 38880, 88832, 200494, 447897, 991350, 2176646, 4744087, 10272514, 22109412, 47325774, 100786897, 213634174, 450844166, 947545289, 1983774852, 4138099947

Offset

0,8

Links

Sean A. Irvine, Table of n, a(n) for n = 0..1364

E. M. Rains and N. J. A. Sloane, On Cayley's Enumeration of Alkanes (or 4-Valent Trees), J. Integer Sequences, Vol. 2 (1999), Article 99.1.1.

Index entries for sequences related to rooted trees

Crossrefs

Sequence in context: A124123 A189714 A128638 * A338229 A102841 A036637

Adjacent sequences: A036627 A036628 A036629 * A036631 A036632 A036633

Keyword

nonn,fini,full

Author

N. J. A. Sloane.

Status

approved