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.

A246801 Primes of the form: concatenation n with n-th composite integer.

Table of values

n a(n)
1 4057
2 4463
3 4969
4 5881
5 6691
6 86117
7 90121
8 129169
9 131171
10 136177
11 160207
12 162209
13 169217
14 193247
15 225287
16 252319
17 265333
18 272341
19 280351
20 288361
21 297371
22 327407
23 346429
24 355441
25 388481
26 410507
27 429529
28 451553
29 456559
30 474581

List of values

[4057, 4463, 4969, 5881, 6691, 86117, 90121, 129169, 131171, 136177, 160207, 162209, 169217, 193247, 225287, 252319, 265333, 272341, 280351, 288361, 297371, 327407, 346429, 355441, 388481, 410507, 429529, 451553, 456559, 474581]