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.

A099481 Numbers k such that 2^k - k^2 is a semiprime.

Table of values

n a(n)
1 11
2 13
3 15
4 21
5 23
6 37
7 39
8 41
9 43
10 47
11 49
12 55
13 67
14 75
15 103
16 105
17 133
18 147
19 153
20 161
21 163
22 177
23 201
24 209
25 221
26 239
27 249
28 263
29 311
30 335
31 355
32 397
33 413
34 421
35 437
36 447
37 583
38 617
39 775
40 807

List of values

[11, 13, 15, 21, 23, 37, 39, 41, 43, 47, 49, 55, 67, 75, 103, 105, 133, 147, 153, 161, 163, 177, 201, 209, 221, 239, 249, 263, 311, 335, 355, 397, 413, 421, 437, 447, 583, 617, 775, 807]