cp's OEIS Frontend

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.

A209195 Smallest prime factor of the n-th highly totient number (A097942(n)) plus 1.

Table of values

n a(n)
1 2
2 3
3 5
4 3
5 13
6 5
7 7
8 73
9 5
10 241
11 433
12 13
13 577
14 7
15 1153
16 11
17 43
18 29
19 7
20 8641
21 41
22 11
23 7
24 30241
25 17
26 61
27 47
28 31
29 13
30 11
31 103681
32 73
33 161281
34 13
35 7
36 241921
37 19
38 41
39 293
40 11
41 17
42 1451521
43 31
44 2177281
45 83
46 2903041
47 11
48 4354561
49 109
50 5806081
51 13
52 8709121
53 9676801

List of values

[2, 3, 5, 3, 13, 5, 7, 73, 5, 241, 433, 13, 577, 7, 1153, 11, 43, 29, 7, 8641, 41, 11, 7, 30241, 17, 61, 47, 31, 13, 11, 103681, 73, 161281, 13, 7, 241921, 19, 41, 293, 11, 17, 1451521, 31, 2177281, 83, 2903041, 11, 4354561, 109, 5806081, 13, 8709121, 9676801]