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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.

A053044 a(n) is the number of iterations of the Euler totient function to reach 1, starting at n!.

Table of values

n a(n)
1 0
2 1
3 2
4 4
5 6
6 8
7 10
8 13
9 15
10 18
11 21
12 24
13 27
14 30
15 33
16 37
17 41
18 44
19 47
20 51
21 54
22 58
23 62
24 66
25 70
26 74
27 77
28 81
29 85
30 89
31 93
32 98
33 102
34 107
35 111
36 115
37 119
38 123
39 127
40 132
41 137
42 141
43 145
44 150
45 154
46 159
47 164
48 169
49 173
50 178
51 183
52 188
53 193
54 197
55 202
56 207
57 211
58 216
59 221
60 226
61 231

List of values

[0, 1, 2, 4, 6, 8, 10, 13, 15, 18, 21, 24, 27, 30, 33, 37, 41, 44, 47, 51, 54, 58, 62, 66, 70, 74, 77, 81, 85, 89, 93, 98, 102, 107, 111, 115, 119, 123, 127, 132, 137, 141, 145, 150, 154, 159, 164, 169, 173, 178, 183, 188, 193, 197, 202, 207, 211, 216, 221, 226, 231]

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

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