A318901 - cp's OEIS frontend

A318901 Number of n-node rooted trees in which five equals the maximal number of nodes in paths starting at a leaf and ending at the first branching node or at the root.

n	a(n)
5	1
6	1
7	3
8	8
9	22
10	59
11	163
12	450
13	1254
14	3505
15	9846
16	27740
17	78412
18	222175
19	630993
20	1795524
21	5118371
22	14613211
23	41780583
24	119605948
25	342793785
26	983487162
27	2824375723
28	8118198640
29	23353430828
30	67230869761
31	193682427149
32	558333769713
33	1610500116245
34	4648080322122

[1, 1, 3, 8, 22, 59, 163, 450, 1254, 3505, 9846, 27740, 78412, 222175, 630993, 1795524, 5118371, 14613211, 41780583, 119605948, 342793785, 983487162, 2824375723, 8118198640, 23353430828, 67230869761, 193682427149, 558333769713, 1610500116245, 4648080322122]

cp's OEIS Frontend

A318901 Number of n-node rooted trees in which five equals the maximal number of nodes in paths starting at a leaf and ending at the first branching node or at the root.

Table of values

List of values