cp's OEIS Frontend

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.

A370409 Numbers k = m * s, where s is composite and squarefree, rad(m) divides s, and 1 < m <= s, where rad() = A007947().

Table of values

n a(n)
1 12
2 18
3 20
4 24
5 28
6 36
7 40
8 44
9 45
10 50
11 52
12 56
13 60
14 63
15 68
16 75
17 76
18 80
19 84
20 88
21 90
22 92
23 98
24 99
25 100
26 104
27 112
28 116
29 117
30 120
31 124
32 126
33 132
34 135
35 136
36 140
37 147
38 148
39 150
40 152
41 153
42 156
43 164
44 168
45 171
46 172
47 175
48 176
49 180
50 184
51 188
52 189
53 196
54 198
55 204
56 207
57 208

List of values

[12, 18, 20, 24, 28, 36, 40, 44, 45, 50, 52, 56, 60, 63, 68, 75, 76, 80, 84, 88, 90, 92, 98, 99, 100, 104, 112, 116, 117, 120, 124, 126, 132, 135, 136, 140, 147, 148, 150, 152, 153, 156, 164, 168, 171, 172, 175, 176, 180, 184, 188, 189, 196, 198, 204, 207, 208]

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

Content is available under The OEIS End-User License Agreement.