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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.

A060207 Start at 2^n, iterate function PrimePi (A000720) until fixed point is reached; sequence gives number of steps.

Table of values

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

List of values

[2, 3, 4, 5, 6, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22]

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