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) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 14 |
| 3 | 17 |
| 4 | 82 |
| 5 | 99 |
| 6 | 478 |
| 7 | 577 |
| 8 | 2786 |
| 9 | 3363 |
| 10 | 16238 |
| 11 | 19601 |
| 12 | 94642 |
| 13 | 114243 |
| 14 | 551614 |
| 15 | 665857 |
| 16 | 3215042 |
| 17 | 3880899 |
| 18 | 18738638 |
| 19 | 22619537 |
| 20 | 109216786 |
| 21 | 131836323 |
| 22 | 636562078 |
| 23 | 768398401 |
| 24 | 3710155682 |
| 25 | 4478554083 |
| 26 | 21624372014 |
| 27 | 26102926097 |
| 28 | 126036076402 |
| 29 | 152139002499 |