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.
| n | a(n) |
|---|---|
| 1 | 23 |
| 2 | 67 |
| 3 | 1213 |
| 4 | 3637 |
| 5 | 4243 |
| 6 | 7879 |
| 7 | 9697 |
| 8 | 102103 |
| 9 | 108109 |
| 10 | 126127 |
| 11 | 138139 |
| 12 | 150151 |
| 13 | 156157 |
| 14 | 180181 |
| 15 | 192193 |
| 16 | 270271 |
| 17 | 276277 |
| 18 | 312313 |
| 19 | 330331 |
| 20 | 378379 |
| 21 | 420421 |
| 22 | 432433 |
| 23 | 438439 |
| 24 | 456457 |
| 25 | 522523 |
| 26 | 540541 |
| 27 | 546547 |
| 28 | 576577 |
| 29 | 600601 |
| 30 | 606607 |
| 31 | 612613 |
| 32 | 618619 |