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.

A070330 Nontrivial numbers in which suffixing or inserting a 0 anywhere yields only composite numbers.

Table of values

n a(n)
1 1
2 7
3 23
4 29
5 31
6 43
7 47
8 73
9 77
10 83
11 91
12 101
13 103
14 107
15 127
16 143
17 157
18 173
19 199
20 209
21 221
22 233
23 241
24 247
25 251
26 257
27 259
28 271
29 307
30 313
31 317
32 343
33 353
34 359
35 373
36 377
37 391
38 409
39 431
40 433
41 437
42 439
43 443
44 461
45 467
46 469
47 487
48 497
49 527
50 541
51 563
52 569
53 583
54 589
55 601

List of values

[1, 7, 23, 29, 31, 43, 47, 73, 77, 83, 91, 101, 103, 107, 127, 143, 157, 173, 199, 209, 221, 233, 241, 247, 251, 257, 259, 271, 307, 313, 317, 343, 353, 359, 373, 377, 391, 409, 431, 433, 437, 439, 443, 461, 467, 469, 487, 497, 527, 541, 563, 569, 583, 589, 601]