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.

A057630 Primes such that replacing each digit d with d copies of the digit d produces a prime. Zeros are allowed.

Table of values

n a(n)
1 11
2 31
3 53
4 101
5 131
6 149
7 223
8 283
9 311
10 313
11 331
12 397
13 463
14 503
15 641
16 691
17 937
18 941
19 1031
20 1049
21 1069
22 1301
23 1409
24 1439
25 1511
26 1609
27 1741
28 1871
29 1949
30 1993
31 1999
32 2083
33 2111
34 2203
35 2447
36 2803
37 2939
38 3001
39 3011
40 3061
41 3163
42 3301
43 3391
44 3433
45 3499
46 3559

List of values

[11, 31, 53, 101, 131, 149, 223, 283, 311, 313, 331, 397, 463, 503, 641, 691, 937, 941, 1031, 1049, 1069, 1301, 1409, 1439, 1511, 1609, 1741, 1871, 1949, 1993, 1999, 2083, 2111, 2203, 2447, 2803, 2939, 3001, 3011, 3061, 3163, 3301, 3391, 3433, 3499, 3559]