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.

A273012 Totient of the n-th semiprime.

Table of values

n a(n)
1 2
2 2
3 6
4 4
5 6
6 8
7 12
8 10
9 20
10 12
11 20
12 16
13 24
14 18
15 24
16 22
17 42
18 32
19 40
20 36
21 28
22 30
23 48
24 44
25 36
26 60
27 40
28 64
29 42
30 56
31 72
32 60
33 46
34 72
35 52
36 72
37 88
38 58
39 96
40 110
41 60
42 80
43 84
44 108
45 66
46 92
47 70
48 120
49 112
50 72
51 120
52 78
53 104
54 132
55 82
56 156
57 116
58 88
59 120
60 144
61 160
62 96
63 132
64 100

List of values

[2, 2, 6, 4, 6, 8, 12, 10, 20, 12, 20, 16, 24, 18, 24, 22, 42, 32, 40, 36, 28, 30, 48, 44, 36, 60, 40, 64, 42, 56, 72, 60, 46, 72, 52, 72, 88, 58, 96, 110, 60, 80, 84, 108, 66, 92, 70, 120, 112, 72, 120, 78, 104, 132, 82, 156, 116, 88, 120, 144, 160, 96, 132, 100]