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.

A053662 Numbers k such that 2k+1 divides k!+1.

Table of values

n a(n)
1 3
2 5
3 9
4 21
5 23
6 33
7 39
8 51
9 63
10 65
11 81
12 89
13 95
14 99
15 113
16 131
17 173
18 183
19 191
20 209
21 215
22 221
23 239
24 245
25 251
26 261
27 281
28 285
29 299
30 303
31 309
32 315
33 341
34 345
35 363
36 369
37 371
38 393
39 411
40 419
41 431
42 443
43 473
44 495
45 509
46 525
47 543
48 545
49 561
50 575
51 593
52 645
53 659
54 683
55 711

List of values

[3, 5, 9, 21, 23, 33, 39, 51, 63, 65, 81, 89, 95, 99, 113, 131, 173, 183, 191, 209, 215, 221, 239, 245, 251, 261, 281, 285, 299, 303, 309, 315, 341, 345, 363, 369, 371, 393, 411, 419, 431, 443, 473, 495, 509, 525, 543, 545, 561, 575, 593, 645, 659, 683, 711]