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.

A104657 Positive integers n such that n^19 + 1 is semiprime (A001358).

Table of values

n a(n)
1 2
2 10
3 28
4 106
5 190
6 292
7 556
8 756
9 858
10 906
11 1012
12 1030
13 1032
14 1060
15 1372
16 1450
17 1488
18 1720
19 1722
20 1758
21 1782
22 1822
23 1972
24 2356
25 2436
26 2446
27 2620
28 2748
29 2788
30 2998
31 3186
32 3300
33 3318
34 3360
35 3466
36 3510
37 3822
38 3852
39 4138
40 4326
41 4506
42 4908
43 5236
44 5518
45 5782

List of values

[2, 10, 28, 106, 190, 292, 556, 756, 858, 906, 1012, 1030, 1032, 1060, 1372, 1450, 1488, 1720, 1722, 1758, 1782, 1822, 1972, 2356, 2436, 2446, 2620, 2748, 2788, 2998, 3186, 3300, 3318, 3360, 3466, 3510, 3822, 3852, 4138, 4326, 4506, 4908, 5236, 5518, 5782]

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

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