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.

A062816 a(n) = phi(n)*tau(n) - 2n = A000010(n)*A000005(n) - 2*n.

Table of values

n a(n)
1 -1
2 -2
3 -2
4 -2
5 -2
6 -4
7 -2
8 0
9 0
10 -4
11 -2
12 0
13 -2
14 -4
15 2
16 8
17 -2
18 0
19 -2
20 8
21 6
22 -4
23 -2
24 16
25 10
26 -4
27 18
28 16
29 -2
30 4
31 -2
32 32
33 14
34 -4
35 26
36 36
37 -2
38 -4
39 18
40 48
41 -2
42 12
43 -2
44 32
45 54
46 -4
47 -2
48 64
49 28
50 20
51 26
52 40
53 -2
54 36
55 50
56 80
57 30
58 -4
59 -2
60 72
61 -2
62 -4
63 90
64 96
65 62
66 28
67 -2
68 56
69 38
70 52
71 -2
72 144
73 -2
74 -4
75 90
76 64
77 86
78 36
79 -2
80 160
81 108
82 -4
83 -2
84 120
85 86
86 -4

List of values

[-1, -2, -2, -2, -2, -4, -2, 0, 0, -4, -2, 0, -2, -4, 2, 8, -2, 0, -2, 8, 6, -4, -2, 16, 10, -4, 18, 16, -2, 4, -2, 32, 14, -4, 26, 36, -2, -4, 18, 48, -2, 12, -2, 32, 54, -4, -2, 64, 28, 20, 26, 40, -2, 36, 50, 80, 30, -4, -2, 72, -2, -4, 90, 96, 62, 28, -2, 56, 38, 52, -2, 144, -2, -4, 90, 64, 86, 36, -2, 160, 108, -4, -2, 120, 86, -4]