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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.

A356174 Replace all prime factors p of n with n/p, then take the integer logarithm (A001414).

Table of values

n a(n)
1 0
2 0
3 0
4 4
5 0
6 5
7 0
8 12
9 6
10 7
11 0
12 14
13 0
14 9
15 8
16 24
17 0
18 16
19 0
20 18
21 10
22 13
23 0
24 27
25 10
26 15
27 18
28 22
29 0
30 20
31 0
32 40
33 14
34 19
35 12
36 30
37 0
38 21
39 16
40 33
41 0
42 24
43 0
44 30
45 22
46 25
47 0
48 44
49 14
50 24
51 20
52 34
53 0
54 33
55 16
56 39
57 22
58 31
59 0
60 36
61 0
62 33
63 26
64 60
65 18
66 32
67 0
68 42
69 26
70 28
71 0
72 48
73 0
74 39

List of values

[0, 0, 0, 4, 0, 5, 0, 12, 6, 7, 0, 14, 0, 9, 8, 24, 0, 16, 0, 18, 10, 13, 0, 27, 10, 15, 18, 22, 0, 20, 0, 40, 14, 19, 12, 30, 0, 21, 16, 33, 0, 24, 0, 30, 22, 25, 0, 44, 14, 24, 20, 34, 0, 33, 16, 39, 22, 31, 0, 36, 0, 33, 26, 60, 18, 32, 0, 42, 26, 28, 0, 48, 0, 39]

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