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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.

A088607 a(1) = 1. For n > 1, a(n) = prime(n) if n is prime, else a(n) = composite(n).

Table of values

n a(n)
1 1
2 3
3 5
4 9
5 11
6 12
7 17
8 15
9 16
10 18
11 31
12 21
13 41
14 24
15 25
16 26
17 59
18 28
19 67
20 32
21 33
22 34
23 83
24 36
25 38
26 39
27 40
28 42
29 109
30 45
31 127
32 48
33 49
34 50
35 51
36 52
37 157
38 55
39 56
40 57
41 179
42 60
43 191
44 63
45 64
46 65
47 211
48 68
49 69
50 70
51 72
52 74
53 241
54 76
55 77
56 78
57 80
58 81
59 277
60 84
61 283
62 86
63 87
64 88
65 90
66 91

List of values

[1, 3, 5, 9, 11, 12, 17, 15, 16, 18, 31, 21, 41, 24, 25, 26, 59, 28, 67, 32, 33, 34, 83, 36, 38, 39, 40, 42, 109, 45, 127, 48, 49, 50, 51, 52, 157, 55, 56, 57, 179, 60, 191, 63, 64, 65, 211, 68, 69, 70, 72, 74, 241, 76, 77, 78, 80, 81, 277, 84, 283, 86, 87, 88, 90, 91]

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

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