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 | 21 |
| 1 | 22 |
| 2 | 219 |
| 3 | 241 |
| 4 | 10341 |
| 5 | 10582 |
| 6 | 105579 |
| 7 | 116161 |
| 8 | 4984341 |
| 9 | 5100502 |
| 10 | 50888859 |
| 11 | 55989361 |
| 12 | 2402442021 |
| 13 | 2458431382 |
| 14 | 24528324459 |
| 15 | 26986755841 |
| 16 | 1157972069781 |
| 17 | 1184958825622 |
| 18 | 11822601500379 |
| 19 | 13007560326001 |