A007755 - cp's OEIS frontend

A007755 Smallest number m such that the trajectory of m under iteration of Euler's totient function phi(n) [A000010] contains exactly n distinct numbers, including m and the fixed point.

n	a(n)
1	1
2	2
3	3
4	5
5	11
6	17
7	41
8	83
9	137
10	257
11	641
12	1097
13	2329
14	4369
15	10537
16	17477
17	35209
18	65537
19	140417
20	281929
21	557057
22	1114129
23	2384897
24	4227137
25	8978569
26	16843009
27	35946497
28	71304257
29	143163649
30	286331153
31	541073537
32	1086374209
33	2281701377
34	4295098369

[1, 2, 3, 5, 11, 17, 41, 83, 137, 257, 641, 1097, 2329, 4369, 10537, 17477, 35209, 65537, 140417, 281929, 557057, 1114129, 2384897, 4227137, 8978569, 16843009, 35946497, 71304257, 143163649, 286331153, 541073537, 1086374209, 2281701377, 4295098369]

cp's OEIS Frontend

A007755 Smallest number m such that the trajectory of m under iteration of Euler's totient function phi(n) [A000010] contains exactly n distinct numbers, including m and the fixed point.

Table of values

List of values