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.

A073411 cototient(x) - 1 where x are the odd semiprimes (i.e., x are odd terms in A001358).

Table of values

n a(n)
1 2
2 6
3 8
4 4
5 12
6 10
7 14
8 6
9 18
10 14
11 20
12 16
13 24
14 16
15 20
16 30
17 18
18 32
19 22
20 38
21 26
22 22
23 10
24 42
25 44
26 24
27 48
28 22
29 32
30 34
31 54
32 28
33 12
34 60
35 62
36 40
37 26
38 68
39 34
40 44
41 28
42 72
43 46
44 36
45 74
46 28
47 50
48 80
49 30
50 84
51 32
52 42
53 56
54 90
55 46
56 16
57 98
58 62
59 34
60 48
61 102
62 64
63 104
64 38
65 108
66 34
67 110
68 52
69 70

List of values

[2, 6, 8, 4, 12, 10, 14, 6, 18, 14, 20, 16, 24, 16, 20, 30, 18, 32, 22, 38, 26, 22, 10, 42, 44, 24, 48, 22, 32, 34, 54, 28, 12, 60, 62, 40, 26, 68, 34, 44, 28, 72, 46, 36, 74, 28, 50, 80, 30, 84, 32, 42, 56, 90, 46, 16, 98, 62, 34, 48, 102, 64, 104, 38, 108, 34, 110, 52, 70]

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

Content is available under The OEIS End-User License Agreement.