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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.

A162731 a(n) is the n-th triprime (A014612) minus its central prime factor.

Table of values

n a(n)
1 6
2 10
3 15
4 18
5 24
6 26
7 27
8 39
9 42
10 42
11 45
12 50
13 60
14 63
15 66
16 65
17 70
18 74
19 75
20 90
21 91
22 96
23 99
24 100
25 105
26 111
27 114
28 114
29 122
30 120
31 125
32 135
33 140
34 146
35 150
36 147
37 162
38 160
39 165
40 168
41 170
42 171
43 170
44 175
45 183
46 186
47 185
48 190
49 204
50 210
51 219
52 225
53 224
54 234
55 231
56 231
57 242
58 238
59 243
60 250

List of values

[6, 10, 15, 18, 24, 26, 27, 39, 42, 42, 45, 50, 60, 63, 66, 65, 70, 74, 75, 90, 91, 96, 99, 100, 105, 111, 114, 114, 122, 120, 125, 135, 140, 146, 150, 147, 162, 160, 165, 168, 170, 171, 170, 175, 183, 186, 185, 190, 204, 210, 219, 225, 224, 234, 231, 231, 242, 238, 243, 250]

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

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