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.

A363491 Numbers k such that 2^k - 5 is a semiprime.

Table of values

n a(n)
1 7
2 13
3 14
4 16
5 19
6 28
7 30
8 31
9 40
10 42
11 51
12 54
13 55
14 58
15 62
16 68
17 85
18 88
19 96
20 111
21 112
22 116
23 128
24 148
25 160
26 162
27 188
28 192
29 198
30 220
31 222
32 236
33 242
34 276
35 300
36 318
37 319
38 320
39 332
40 372
41 373
42 398
43 420
44 428
45 432
46 458
47 460
48 482
49 505
50 520
51 532
52 542
53 546
54 556
55 650
56 692
57 714

List of values

[7, 13, 14, 16, 19, 28, 30, 31, 40, 42, 51, 54, 55, 58, 62, 68, 85, 88, 96, 111, 112, 116, 128, 148, 160, 162, 188, 192, 198, 220, 222, 236, 242, 276, 300, 318, 319, 320, 332, 372, 373, 398, 420, 428, 432, 458, 460, 482, 505, 520, 532, 542, 546, 556, 650, 692, 714]