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.

A173430 Last of consecutive coprime iterations of sum-of-divisors function.

Table of values

n a(n)
1 1
2 15
3 15
4 15
5 6
6 6
7 15
8 15
9 14
10 10
11 12
12 12
13 14
14 14
15 15
16 104
17 18
18 18
19 20
20 20
21 104
22 22
23 24
24 24
25 104
26 26
27 40
28 28
29 30
30 30
31 104
32 104
33 33
34 34
35 48
36 91
37 38
38 38
39 56
40 40
41 42
42 42
43 44
44 44
45 45
46 46
47 48
48 48
49 80
50 255
51 51
52 52
53 54
54 54
55 72
56 56
57 80
58 58
59 60
60 60
61 62
62 62
63 104
64 255
65 84
66 66
67 68
68 68

List of values

[1, 15, 15, 15, 6, 6, 15, 15, 14, 10, 12, 12, 14, 14, 15, 104, 18, 18, 20, 20, 104, 22, 24, 24, 104, 26, 40, 28, 30, 30, 104, 104, 33, 34, 48, 91, 38, 38, 56, 40, 42, 42, 44, 44, 45, 46, 48, 48, 80, 255, 51, 52, 54, 54, 72, 56, 80, 58, 60, 60, 62, 62, 104, 255, 84, 66, 68, 68]

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

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