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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.

A182009 a(n) = ceiling(sqrt(2n*log(2))+(3-2*log(2))/6).

Table of values

n a(n)
1 2
2 2
3 3
4 3
5 3
6 4
7 4
8 4
9 4
10 4
11 5
12 5
13 5
14 5
15 5
16 5
17 6
18 6
19 6
20 6
21 6
22 6
23 6
24 7
25 7
26 7
27 7
28 7
29 7
30 7
31 7
32 7
33 8
34 8
35 8
36 8
37 8
38 8
39 8
40 8
41 8
42 8
43 8
44 9
45 9
46 9
47 9
48 9
49 9
50 9
51 9
52 9
53 9
54 9
55 10
56 10
57 10
58 10
59 10
60 10
61 10
62 10
63 10
64 10
65 10
66 10
67 10
68 10
69 11
70 11
71 11
72 11
73 11
74 11
75 11
76 11
77 11
78 11
79 11

List of values

[2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11]

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