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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.

A336200 Lexicographically earliest sequence of distinct terms such that every integer k appears twice, at distance a(k).

Table of values

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

List of values

[1, 1, 2, 2, 3, 4, 3, 4, 5, 6, 8, 5, 7, 6, 8, 7, 9, 10, 11, 12, 13, 9, 14, 10, 12, 15, 11, 13, 14, 16, 17, 18, 19, 15, 20, 21, 16, 23, 22, 17, 24, 18, 25, 19, 26, 27, 20, 22, 21, 28, 24, 23, 29, 30, 25, 31, 27, 32, 33, 26, 35, 34, 28, 36, 38, 37, 29, 39, 40, 30]

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

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