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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.

A129972 a(n) = 2*floor(log_2(n)) + 1.

Table of values

n a(n)
1 1
2 3
3 3
4 5
5 5
6 5
7 5
8 7
9 7
10 7
11 7
12 7
13 7
14 7
15 7
16 9
17 9
18 9
19 9
20 9
21 9
22 9
23 9
24 9
25 9
26 9
27 9
28 9
29 9
30 9
31 9
32 11
33 11
34 11
35 11
36 11
37 11
38 11
39 11
40 11
41 11
42 11
43 11
44 11
45 11
46 11
47 11
48 11
49 11
50 11
51 11
52 11
53 11
54 11
55 11
56 11
57 11
58 11
59 11
60 11
61 11
62 11
63 11
64 13
65 13
66 13
67 13
68 13
69 13
70 13
71 13
72 13
73 13
74 13
75 13
76 13
77 13
78 13
79 13
80 13

List of values

[1, 3, 3, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 7, 7, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13]

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