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 | 2 |
| 2 | 2 |
| 3 | 7 |
| 4 | 22 |
| 5 | 93 |
| 6 | 413 |
| 7 | 2073 |
| 8 | 10741 |
| 9 | 57540 |
| 10 | 312805 |
| 11 | 1722483 |
| 12 | 9564565 |
| 13 | 53489304 |
| 14 | 300840332 |
| 15 | 1700347858 |
| 16 | 9650975401 |