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.

A248030 Least positive integer m such that m + n divides sigma(m)*phi(n), where sigma(.) and phi(.) are given by A000203 and A000010.

Table of values

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

List of values

[2, 12, 4, 2, 3, 6, 2, 10, 3, 2, 21, 8, 3, 22, 13, 8, 9, 6, 8, 12, 3, 8, 10, 4, 5, 10, 21, 8, 20, 26, 4, 8, 7, 14, 13, 12, 8, 4, 33, 8, 23, 6, 20, 12, 3, 16, 22, 72, 7, 10, 13, 4, 27, 42, 5, 24, 15, 26, 57, 18, 11, 38, 27, 20, 31, 4, 21, 36, 19, 2]

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