A325205 - cp's OEIS frontend

A325205 a(n) is the number of labeled rooted trees on a set of size n where each node has at most 6 neighbors that are further away from the root than the node itself.

n	a(n)
0	0
1	1
2	2
3	9
4	64
5	625
6	7776
7	117649
8	2097144
9	43046136
10	999970020
11	25936053990
12	742947675624
13	23295384644532
14	793591829158128
15	29187143427692250
16	1152639088016576160
17	48646833059722978080
18	2185150741063924810176
19	104085328898784937079376
20	5240461483486301616704160

[0, 1, 2, 9, 64, 625, 7776, 117649, 2097144, 43046136, 999970020, 25936053990, 742947675624, 23295384644532, 793591829158128, 29187143427692250, 1152639088016576160, 48646833059722978080, 2185150741063924810176, 104085328898784937079376, 5240461483486301616704160]

cp's OEIS Frontend

A325205 a(n) is the number of labeled rooted trees on a set of size n where each node has at most 6 neighbors that are further away from the root than the node itself.

Table of values

List of values