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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.

A293975 If n is even, divide by 2; otherwise, add the next larger prime.

Table of values

n a(n)
0 0
1 3
2 1
3 8
4 2
5 12
6 3
7 18
8 4
9 20
10 5
11 24
12 6
13 30
14 7
15 32
16 8
17 36
18 9
19 42
20 10
21 44
22 11
23 52
24 12
25 54
26 13
27 56
28 14
29 60
30 15
31 68
32 16
33 70
34 17
35 72
36 18
37 78
38 19
39 80
40 20
41 84
42 21
43 90
44 22
45 92
46 23
47 100
48 24
49 102
50 25
51 104
52 26
53 112
54 27
55 114
56 28
57 116
58 29
59 120
60 30
61 128
62 31
63 130
64 32
65 132
66 33
67 138
68 34

List of values

[0, 3, 1, 8, 2, 12, 3, 18, 4, 20, 5, 24, 6, 30, 7, 32, 8, 36, 9, 42, 10, 44, 11, 52, 12, 54, 13, 56, 14, 60, 15, 68, 16, 70, 17, 72, 18, 78, 19, 80, 20, 84, 21, 90, 22, 92, 23, 100, 24, 102, 25, 104, 26, 112, 27, 114, 28, 116, 29, 120, 30, 128, 31, 130, 32, 132, 33, 138, 34]

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

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