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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.

A003004 Size of the largest subset of the numbers [1..n] which does not contain a 5-term arithmetic progression.

Table of values

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

List of values

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

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

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