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.

A262210 Numbers whose decimal digits are the concatenation of a nonprime followed by a prime.

Table of values

n a(n)
1 12
2 13
3 15
4 17
5 43
6 45
7 47
8 67
9 83
10 93
11 95
12 97
13 103
14 107
15 113
16 123
17 125
18 127
19 129
20 131
21 137
22 141
23 143
24 147
25 153
26 157
27 159
28 161
29 163
30 165
31 167
32 171
33 173
34 179
35 183
36 185
37 187
38 193
39 197
40 402
41 403
42 405
43 407
44 411
45 413
46 417
47 419
48 423
49 429
50 431
51 437
52 441
53 443
54 447
55 453
56 459
57 461
58 467
59 471

List of values

[12, 13, 15, 17, 43, 45, 47, 67, 83, 93, 95, 97, 103, 107, 113, 123, 125, 127, 129, 131, 137, 141, 143, 147, 153, 157, 159, 161, 163, 165, 167, 171, 173, 179, 183, 185, 187, 193, 197, 402, 403, 405, 407, 411, 413, 417, 419, 423, 429, 431, 437, 441, 443, 447, 453, 459, 461, 467, 471]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.