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.

A369662 Numbers k whose arithmetic derivative k' is of the form 4m+2, and k' has an odd number of prime factors.

Table of values

n a(n)
1 65
2 77
3 135
4 141
5 161
6 185
7 201
8 209
9 221
10 301
11 305
12 315
13 321
14 341
15 351
16 365
17 377
18 381
19 413
20 437
21 453
22 481
23 485
24 495
25 497
26 501
27 537
28 545
29 589
30 649
31 681
32 689
33 717
34 721
35 729
36 735
37 737
38 745
39 749
40 785
41 789
42 849
43 855
44 893
45 901
46 905
47 917
48 921
49 975
50 989
51 999
52 1035
53 1037
54 1073
55 1081
56 1101
57 1121
58 1133
59 1141
60 1157
61 1165

List of values

[65, 77, 135, 141, 161, 185, 201, 209, 221, 301, 305, 315, 321, 341, 351, 365, 377, 381, 413, 437, 453, 481, 485, 495, 497, 501, 537, 545, 589, 649, 681, 689, 717, 721, 729, 735, 737, 745, 749, 785, 789, 849, 855, 893, 901, 905, 917, 921, 975, 989, 999, 1035, 1037, 1073, 1081, 1101, 1121, 1133, 1141, 1157, 1165]