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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.

A175858 a(n) = all values of A175856(m) in increasing order, where A175856(m): a(m) = m for m = noncomposites, a(m) = previous term - 1 for m = composites.

Table of values

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

List of values

[1, 2, 2, 3, 4, 4, 5, 5, 6, 7, 10, 10, 11, 11, 12, 13, 16, 16, 17, 17, 18, 18, 19, 19, 20, 21, 22, 23, 26, 27, 28, 28, 29, 29, 30, 31, 34, 35, 36, 37, 40, 40, 41, 41, 42, 42, 43, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 56, 57, 58, 58, 59, 59, 60]

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

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