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.

A363523 k is a term of this sequence if and only if Clausen(k, 0) divides Clausen(k, 2). (Clausen = A160014.)

Table of values

n a(n)
1 1
2 3
3 9
4 15
5 27
6 45
7 75
8 81
9 99
10 105
11 135
12 225
13 243
14 255
15 297
16 315
17 375
18 405
19 495
20 525
21 675
22 729
23 735
24 765
25 783
26 891
27 945
28 1089
29 1125
30 1215
31 1275
32 1287
33 1485
34 1575
35 1785
36 1875
37 2025
38 2115
39 2187
40 2205
41 2295
42 2349
43 2415
44 2475
45 2625
46 2673
47 2835
48 3267
49 3375
50 3465

List of values

[1, 3, 9, 15, 27, 45, 75, 81, 99, 105, 135, 225, 243, 255, 297, 315, 375, 405, 495, 525, 675, 729, 735, 765, 783, 891, 945, 1089, 1125, 1215, 1275, 1287, 1485, 1575, 1785, 1875, 2025, 2115, 2187, 2205, 2295, 2349, 2415, 2475, 2625, 2673, 2835, 3267, 3375, 3465]