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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.

A177691 The odd values of PrimePi(.), with repetition.

Table of values

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

List of values

[1, 3, 3, 5, 5, 7, 7, 9, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11, 11, 13, 13, 15, 15, 15, 15, 15, 15, 17, 17, 19, 19, 19, 19, 21, 21, 21, 21, 21, 21, 23, 23, 23, 23, 23, 23, 25, 25, 25, 25, 27, 27, 27, 27, 29, 29, 29, 29, 31, 31, 31, 31, 33, 33, 35, 35, 37, 37, 37, 37, 37, 37, 39, 39, 39]

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

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