A058811 - cp's OEIS frontend

A058811 Number of nodes at the n-th level of the Inverse-Totient-Tree (ITT) with the root at 1, and edges connecting number m to all numbers k such that phi(k) = m.

n	a(n)
0	1
1	1
2	3
3	8
4	17
5	41
6	92
7	215
8	487
9	1126
10	2583
11	5981
12	13698
13	31647
14	72678
15	167474
16	385021
17	887133
18	2041375
19	4700526
20	10817997
21	24908164
22	57334111
23	131995229

[1, 1, 3, 8, 17, 41, 92, 215, 487, 1126, 2583, 5981, 13698, 31647, 72678, 167474, 385021, 887133, 2041375, 4700526, 10817997, 24908164, 57334111, 131995229]

cp's OEIS Frontend

A058811 Number of nodes at the n-th level of the Inverse-Totient-Tree (ITT) with the root at 1, and edges connecting number m to all numbers k such that phi(k) = m.

Table of values

List of values