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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.

A284342 Numbers n such that A065642(n) < n*lpf(n), where lpf = least prime factor (A020639).

Table of values

n a(n)
1 12
2 18
3 24
4 36
5 40
6 45
7 48
8 50
9 54
10 56
11 60
12 63
13 72
14 75
15 80
16 84
17 90
18 96
19 98
20 100
21 108
22 112
23 120
24 126
25 132
26 135
27 144
28 147
29 150
30 156
31 160
32 162
33 168
34 175
35 176
36 180
37 189
38 192
39 196
40 198
41 200
42 204
43 208
44 216
45 224
46 225
47 228
48 234
49 240
50 242
51 245
52 250
53 252
54 264
55 270
56 275
57 276
58 280
59 288
60 294
61 297
62 300

List of values

[12, 18, 24, 36, 40, 45, 48, 50, 54, 56, 60, 63, 72, 75, 80, 84, 90, 96, 98, 100, 108, 112, 120, 126, 132, 135, 144, 147, 150, 156, 160, 162, 168, 175, 176, 180, 189, 192, 196, 198, 200, 204, 208, 216, 224, 225, 228, 234, 240, 242, 245, 250, 252, 264, 270, 275, 276, 280, 288, 294, 297, 300]

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

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