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.

A373265 Numbers k such that k' / gcd(k,k') is of the form 4m+2, where k' stands for the arithmetic derivative of k, A003415.

Table of values

n a(n)
1 9
2 16
3 20
4 21
5 25
6 33
7 49
8 52
9 57
10 65
11 68
12 69
13 77
14 85
15 93
16 108
17 116
18 121
19 129
20 133
21 135
22 141
23 145
24 148
25 161
26 164
27 169
28 177
29 185
30 192
31 201
32 205
33 209
34 212
35 213
36 217
37 221
38 237
39 240
40 244
41 249
42 252
43 253
44 265
45 289
46 292
47 300
48 301
49 305
50 309
51 315
52 321
53 329
54 341
55 351
56 356
57 361
58 365
59 375
60 377
61 381
62 388
63 393
64 396
65 404
66 413
67 417

List of values

[9, 16, 20, 21, 25, 33, 49, 52, 57, 65, 68, 69, 77, 85, 93, 108, 116, 121, 129, 133, 135, 141, 145, 148, 161, 164, 169, 177, 185, 192, 201, 205, 209, 212, 213, 217, 221, 237, 240, 244, 249, 252, 253, 265, 289, 292, 300, 301, 305, 309, 315, 321, 329, 341, 351, 356, 361, 365, 375, 377, 381, 388, 393, 396, 404, 413, 417]