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.

A096820 Numbers k such that 2^k - 21 is prime.

Table of values

n a(n)
1 5
2 6
3 7
4 9
5 11
6 13
7 14
8 21
9 23
10 41
11 46
12 89
13 110
14 389
15 413
16 489
17 869
18 1589
19 1713
20 2831
21 10843
22 11257
23 16949
24 24513
25 39621
26 43349
27 62941
28 96094
29 139237
30 145289
31 264683
32 396790
33 420694
34 439931
35 659589
36 783893
37 840203
38 944561

List of values

[5, 6, 7, 9, 11, 13, 14, 21, 23, 41, 46, 89, 110, 389, 413, 489, 869, 1589, 1713, 2831, 10843, 11257, 16949, 24513, 39621, 43349, 62941, 96094, 139237, 145289, 264683, 396790, 420694, 439931, 659589, 783893, 840203, 944561]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.