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) |
|---|---|
| 5 | 6 |
| 6 | 96 |
| 7 | 874 |
| 8 | 6040 |
| 9 | 35458 |
| 10 | 187288 |
| 11 | 920350 |
| 12 | 4297240 |
| 13 | 19332662 |
| 14 | 84615152 |
| 15 | 362772194 |
| 16 | 1531122296 |
| 17 | 6385177274 |
| 18 | 26382771464 |
| 19 | 108232980822 |
| 20 | 441554515704 |
| 21 | 1793612585550 |
| 22 | 7261158583200 |
| 23 | 29318205685050 |