A157994 - cp's OEIS frontend

A157994 Number of trees with n edges equipped with a cyclic order on their edges, i.e., number of orbits of the action of Z/nZ on the set of edge-labeled trees of size n, given by cyclically permuting the labels.

n	a(n)
1	1
2	1
3	2
4	8
5	44
6	411
7	4682
8	66524
9	1111134
10	21437357
11	469070942
12	11488238992
13	311505013052
14	9267596377239
15	300239975166840
16	10523614185609344
17	396861212733968144
18	16024522976922760209
19	689852631578947368422

[1, 1, 2, 8, 44, 411, 4682, 66524, 1111134, 21437357, 469070942, 11488238992, 311505013052, 9267596377239, 300239975166840, 10523614185609344, 396861212733968144, 16024522976922760209, 689852631578947368422]

cp's OEIS Frontend

A157994 Number of trees with n edges equipped with a cyclic order on their edges, i.e., number of orbits of the action of Z/nZ on the set of edge-labeled trees of size n, given by cyclically permuting the labels.

Table of values

List of values