cp's OEIS Frontend

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.

A130821 2n-1 appears 2n times.

Table of values

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

List of values

[1, 1, 3, 3, 3, 3, 5, 5, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 7, 7, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15]

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

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