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.

A217044 Primes that remain prime when a single "2" digit is inserted between any two adjacent decimal digits.

Table of values

n a(n)
1 17
2 23
3 29
4 41
5 53
6 83
7 89
8 101
9 113
10 131
11 137
12 149
13 251
14 359
15 401
16 419
17 443
18 461
19 647
20 719
21 797
22 821
23 863
24 941
25 1289
26 1823
27 2111
28 2543
29 3323
30 3413
31 4013
32 4463
33 4751
34 5021
35 5501
36 5807
37 6299
38 6827
39 7229
40 7643
41 7883
42 8039
43 8219
44 8609
45 8837
46 9221
47 9227
48 9461
49 9623

List of values

[17, 23, 29, 41, 53, 83, 89, 101, 113, 131, 137, 149, 251, 359, 401, 419, 443, 461, 647, 719, 797, 821, 863, 941, 1289, 1823, 2111, 2543, 3323, 3413, 4013, 4463, 4751, 5021, 5501, 5807, 6299, 6827, 7229, 7643, 7883, 8039, 8219, 8609, 8837, 9221, 9227, 9461, 9623]