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 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 9 |
| 5 | 24 |
| 6 | 98 |
| 7 | 622 |
| 8 | 7293 |
| 9 | 162052 |
| 10 | 6997100 |
| 11 | 578605618 |
| 12 | 90558592724 |
| 13 | 26673271109299 |
| 14 | 14758661765740616 |