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.

A050473 Smallest k such that phi(k+n) = 2*phi(k).

Table of values

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

List of values

[2, 1, 1, 2, 1, 4, 3, 4, 3, 5, 5, 8, 26, 7, 5, 8, 9, 12, 5, 10, 7, 8, 46, 16, 5, 13, 9, 14, 7, 25, 21, 13, 9, 17, 7, 24, 62, 19, 11, 20, 76, 28, 13, 16, 15, 23, 17, 32, 21, 25, 17, 26, 52, 36, 11, 28, 13, 26, 13, 45, 74, 28, 17, 26, 13, 39, 33, 31, 21, 32, 13, 48, 39, 37, 25, 38]

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

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