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.

A105289 Indices of Lucas 5-step numbers A074048 which have a nontrivial divisor in common with index.

Table of values

n a(n)
1 6
2 12
3 18
4 20
5 21
6 33
7 36
8 48
9 51
10 54
11 55
12 60
13 75
14 78
15 87
16 99
17 100
18 108
19 110
20 112
21 114
22 120
23 129
24 132
25 133
26 144
27 147
28 153
29 154
30 155
31 159
32 162
33 165
34 174
35 177
36 180
37 182
38 183
39 185
40 195
41 210
42 219
43 225
44 228
45 230
46 234
47 237
48 245
49 261
50 267
51 270
52 275
53 285
54 290
55 297
56 310

List of values

[6, 12, 18, 20, 21, 33, 36, 48, 51, 54, 55, 60, 75, 78, 87, 99, 100, 108, 110, 112, 114, 120, 129, 132, 133, 144, 147, 153, 154, 155, 159, 162, 165, 174, 177, 180, 182, 183, 185, 195, 210, 219, 225, 228, 230, 234, 237, 245, 261, 267, 270, 275, 285, 290, 297, 310]

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

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