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 | 1 |
| 2 | 7 |
| 3 | 41 |
| 4 | 604 |
| 5 | 13753 |
| 6 | 504243 |
| 7 | 24824785 |
| 8 | 1598346352 |
| 9 | 129958211233 |
| 10 | 13030565312011 |
| 11 | 1579721338432537 |
| 12 | 227804599861102676 |
| 13 | 38541084552054952009 |
| 14 | 7560534755192908672087 |
| 15 | 1702288146755359962223409 |