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 | 3 |
| 2 | 5 |
| 3 | 105 |
| 4 | 189 |
| 5 | 3465 |
| 6 | 19305 |
| 7 | 2027025 |
| 8 | 3828825 |
| 9 | 130945815 |
| 10 | 1249937325 |
| 11 | 105411381075 |
| 12 | 608142583125 |
| 13 | 30494006668125 |
| 14 | 412685556908625 |
| 15 | 191898783962510625 |
| 16 | 372509404162520625 |
| 17 | 24627010608522196875 |