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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A060611 Smallest prime p such that n = A049108(p) = length of chain of iterates of Euler Phi starting with p.

Table of values

n a(n)
2 2
3 3
4 5
5 11
6 17
7 41
8 83
9 137
10 257
11 641
12 1097
13 2657
14 5441
15 10883
16 17477
17 40961
18 65537
19 140417
20 295937
21 557057
22 1193537
23 2384897
24 4227137
25 9548417
26 17966357
27 35946497
28 71304257
29 162174977
30 305268737
31 541073537
32 1212153857
33 2281701377

List of values

[2, 3, 5, 11, 17, 41, 83, 137, 257, 641, 1097, 2657, 5441, 10883, 17477, 40961, 65537, 140417, 295937, 557057, 1193537, 2384897, 4227137, 9548417, 17966357, 35946497, 71304257, 162174977, 305268737, 541073537, 1212153857, 2281701377]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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