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.

A073757 a(n) = d(n) + phi(n) - 1.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 5
7 7
8 7
9 8
10 7
11 11
12 9
13 13
14 9
15 11
16 12
17 17
18 11
19 19
20 13
21 15
22 13
23 23
24 15
25 22
26 15
27 21
28 17
29 29
30 15
31 31
32 21
33 23
34 19
35 27
36 20
37 37
38 21
39 27
40 23
41 41
42 19
43 43
44 25
45 29
46 25
47 47
48 25
49 44
50 25
51 35
52 29
53 53
54 25
55 43
56 31
57 39
58 31
59 59
60 27
61 61
62 33
63 41
64 38
65 51
66 27
67 67
68 37
69 47
70 31
71 71
72 35
73 73

List of values

[1, 2, 3, 4, 5, 5, 7, 7, 8, 7, 11, 9, 13, 9, 11, 12, 17, 11, 19, 13, 15, 13, 23, 15, 22, 15, 21, 17, 29, 15, 31, 21, 23, 19, 27, 20, 37, 21, 27, 23, 41, 19, 43, 25, 29, 25, 47, 25, 44, 25, 35, 29, 53, 25, 43, 31, 39, 31, 59, 27, 61, 33, 41, 38, 51, 27, 67, 37, 47, 31, 71, 35, 73]

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

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