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 | 2 |
| 3 | 6 |
| 4 | 636 |
| 5 | 1592 |
| 6 | 2574 |
| 7 | 292656 |
| 8 | 917042 |
| 9 | 1108972 |
| 10 | 1678508 |
| 11 | 3334890730 |
| 12 | 3981285760 |
| 13 | 28567166356 |
| 14 | 32739591796 |
| 15 | 83332116034 |
| 16 | 871263881618 |
| 17 | 1055495274756 |