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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.

A003005 Size of the largest subset of the numbers [1..n] which doesn't contain a 6-term arithmetic progression.

Table of values

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

List of values

[1, 2, 3, 4, 5, 5, 6, 7, 8, 9, 9, 10, 11, 12, 13, 13, 14, 15, 16, 17, 17, 18, 19, 20, 21, 22, 22, 22, 23, 23, 23, 24, 25, 25, 26, 27, 28, 28, 29, 30, 31, 31, 31, 32, 33, 34, 34, 35, 36, 37, 38, 38, 38, 39, 39, 40, 40, 41, 42, 42, 43, 44, 44, 45, 46, 47, 47, 48, 48]

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

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