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.

A085412 Numbers n such that concatenation of prime[n] and first digit of prime[n] is prime.

Table of values

n a(n)
1 6
2 8
3 11
4 12
5 22
6 27
7 29
8 36
9 37
10 42
11 44
12 67
13 68
14 71
15 72
16 73
17 74
18 75
19 76
20 133
21 134
22 138
23 157
24 160
25 161
26 162
27 163
28 164
29 166
30 169
31 172
32 174
33 175
34 179
35 180
36 187
37 197
38 204
39 207
40 210
41 232
42 235
43 237
44 247
45 249
46 251
47 254
48 261
49 263
50 264
51 269
52 272
53 278
54 282
55 285
56 287
57 303

List of values

[6, 8, 11, 12, 22, 27, 29, 36, 37, 42, 44, 67, 68, 71, 72, 73, 74, 75, 76, 133, 134, 138, 157, 160, 161, 162, 163, 164, 166, 169, 172, 174, 175, 179, 180, 187, 197, 204, 207, 210, 232, 235, 237, 247, 249, 251, 254, 261, 263, 264, 269, 272, 278, 282, 285, 287, 303]