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.

A057628 Primes such that replacing each digit d with d copies of the digit d produces a prime. Zeros are not allowed.

Table of values

n a(n)
1 11
2 31
3 53
4 131
5 149
6 223
7 283
8 311
9 313
10 331
11 397
12 463
13 641
14 691
15 937
16 941
17 1439
18 1511
19 1741
20 1871
21 1949
22 1993
23 1999
24 2111
25 2447
26 2939
27 3163
28 3391
29 3433
30 3499
31 3559
32 3593
33 3659
34 3911
35 3931
36 5227
37 5399
38 5923
39 6163
40 6269
41 6653
42 6719
43 7177
44 7741
45 8389

List of values

[11, 31, 53, 131, 149, 223, 283, 311, 313, 331, 397, 463, 641, 691, 937, 941, 1439, 1511, 1741, 1871, 1949, 1993, 1999, 2111, 2447, 2939, 3163, 3391, 3433, 3499, 3559, 3593, 3659, 3911, 3931, 5227, 5399, 5923, 6163, 6269, 6653, 6719, 7177, 7741, 8389]