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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.

A137687 a(n) = round(3 n / (2 log(n+2))), an approximation to A081399.

Table of values

n a(n)
0 0
1 1
2 2
3 3
4 3
5 4
6 4
7 5
8 5
9 6
10 6
11 6
12 7
13 7
14 8
15 8
16 8
17 9
18 9
19 9
20 10
21 10
22 10
23 11
24 11
25 11
26 12
27 12
28 12
29 13
30 13
31 13
32 14
33 14
34 14
35 15
36 15
37 15
38 15
39 16
40 16
41 16
42 17
43 17
44 17
45 18
46 18
47 18
48 18
49 19
50 19
51 19
52 20
53 20
54 20
55 20
56 21
57 21
58 21
59 22
60 22
61 22
62 22
63 23
64 23
65 23
66 23
67 24
68 24
69 24
70 25
71 25
72 25
73 25
74 26
75 26

List of values

[0, 1, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 25, 25, 25, 25, 26, 26]

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

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