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 | 2 |
| 1 | 5 |
| 2 | 24 |
| 3 | 134 |
| 4 | 802 |
| 5 | 4960 |
| 6 | 31212 |
| 7 | 198504 |
| 8 | 1271754 |
| 9 | 8192780 |
| 10 | 53009614 |
| 11 | 344213930 |
| 12 | 2241814696 |
| 13 | 14637778784 |
| 14 | 95786210880 |