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 | 3 |
| 2 | 1627 |
| 3 | 2298073 |
| 4 | 12055033499 |
| 5 | 5135831051749 |
| 6 | 132374942978911 |
| 7 | 684810967798954343 |
| 8 | 27800772498401810543 |
| 9 | 31705538882266542665633 |
| 10 | 10426504028032396567753387 |
| 11 | 1495118023958546538597068807 |
| 12 | 425143541608166955051684643069 |
| 13 | 15918355788492735798148953834991 |