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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.

A365790 a(n) = number of k <= b(n) such that rad(k) | b(n), where rad(n) = A007947(n) and b(n) = A126706(n).

Table of values

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

List of values

[8, 10, 8, 11, 8, 14, 11, 9, 8, 15, 12, 9, 16, 11, 26, 8, 10, 18, 9, 10, 14, 28, 11, 32, 10, 20, 13, 8, 15, 11, 21, 14, 10, 8, 36, 10, 33, 31, 12, 12, 27, 23, 10, 11, 41, 12, 8, 31, 18, 24, 11, 38, 8, 11, 8, 14, 44, 12, 11, 11, 25, 16, 36, 19, 33, 8, 14, 11, 26]

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

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