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.

A281022 Single (or isolated or non-twin) primes that are also safe primes.

Table of values

n a(n)
1 23
2 47
3 83
4 167
5 263
6 359
7 383
8 467
9 479
10 503
11 563
12 587
13 719
14 839
15 863
16 887
17 983
18 1187
19 1283
20 1307
21 1367
22 1439
23 1523
24 1823
25 1907
26 2039
27 2063
28 2099
29 2207
30 2447
31 2459
32 2579
33 2819
34 2879
35 2903
36 2963
37 3023
38 3203
39 3623
40 3779
41 3803
42 3863
43 3947
44 4007
45 4079
46 4139
47 4283
48 4679
49 4703
50 4919

List of values

[23, 47, 83, 167, 263, 359, 383, 467, 479, 503, 563, 587, 719, 839, 863, 887, 983, 1187, 1283, 1307, 1367, 1439, 1523, 1823, 1907, 2039, 2063, 2099, 2207, 2447, 2459, 2579, 2819, 2879, 2903, 2963, 3023, 3203, 3623, 3779, 3803, 3863, 3947, 4007, 4079, 4139, 4283, 4679, 4703, 4919]

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

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