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.

A105437 Smallest prime that remains prime when a string of n 1's is prepended to it.

Table of values

n a(n)
0 2
1 3
2 3
3 7
4 3
5 83
6 31
7 7
8 3
9 29
10 3
11 53
12 23
13 439
14 23
15 53
16 31
17 71
18 31
19 79
20 89
21 233
22 7
23 3
24 227
25 487
26 281
27 31
28 7
29 227
30 47
31 439
32 29
33 47
34 349
35 491
36 43
37 31
38 23
39 7
40 919
41 701
42 229
43 283
44 281
45 59
46 223
47 2693
48 53
49 67
50 239
51 2011
52 2113
53 467
54 41
55 601
56 587
57 311
58 337
59 2879
60 59
61 619
62 71

List of values

[2, 3, 3, 7, 3, 83, 31, 7, 3, 29, 3, 53, 23, 439, 23, 53, 31, 71, 31, 79, 89, 233, 7, 3, 227, 487, 281, 31, 7, 227, 47, 439, 29, 47, 349, 491, 43, 31, 23, 7, 919, 701, 229, 283, 281, 59, 223, 2693, 53, 67, 239, 2011, 2113, 467, 41, 601, 587, 311, 337, 2879, 59, 619, 71]