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 | 3 |
| 3 | 1 |
| 4 | 5 |
| 5 | 1 |
| 6 | 35 |
| 7 | 5 |
| 8 | 208 |
| 9 | 8073 |
| 10 | 36120 |
| 11 | 1133197 |
| 12 | 456667 |
| 13 | 13535367 |
| 14 | 2592766 |
| 15 | 3409144 |
| 16 | 24103053951 |
| 17 | 1417826703 |
| 18 | 486682892638 |