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.

A013948 Positions of 2's in Kolakoski sequence (A000002).

Table of values

n a(n)
1 2
2 3
3 6
4 8
5 9
6 11
7 12
8 15
9 18
10 19
11 21
12 24
13 26
14 27
15 30
16 33
17 35
18 36
19 38
20 39
21 42
22 44
23 45
24 47
25 50
26 53
27 54
28 56
29 57
30 60
31 62
32 63
33 65
34 66
35 69
36 72
37 74
38 75
39 77
40 80
41 81
42 83
43 84
44 87
45 89
46 90
47 92
48 93
49 96
50 99
51 100
52 102
53 105
54 107
55 108
56 110
57 111
58 114
59 117
60 119
61 120
62 123
63 126
64 127
65 129
66 132
67 135

List of values

[2, 3, 6, 8, 9, 11, 12, 15, 18, 19, 21, 24, 26, 27, 30, 33, 35, 36, 38, 39, 42, 44, 45, 47, 50, 53, 54, 56, 57, 60, 62, 63, 65, 66, 69, 72, 74, 75, 77, 80, 81, 83, 84, 87, 89, 90, 92, 93, 96, 99, 100, 102, 105, 107, 108, 110, 111, 114, 117, 119, 120, 123, 126, 127, 129, 132, 135]

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

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