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.

A102504 Values of n for which the concatenations 1nn1, 3nn3, 7nn7 and 9nn9 are all primes.

Table of values

n a(n)
1 2092
2 2131
3 2797
4 3433
5 4126
6 5524
7 5710
8 6817
9 8383
10 8815
11 9472
12 114613
13 116329
14 130213
15 206776
16 239389
17 282298
18 286642
19 306046
20 307180
21 311317
22 318310
23 341386
24 360733
25 366529
26 377005
27 425665
28 430597
29 460441
30 475642
31 475660
32 478078
33 490870

List of values

[2092, 2131, 2797, 3433, 4126, 5524, 5710, 6817, 8383, 8815, 9472, 114613, 116329, 130213, 206776, 239389, 282298, 286642, 306046, 307180, 311317, 318310, 341386, 360733, 366529, 377005, 425665, 430597, 460441, 475642, 475660, 478078, 490870]