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 | 8748 |
| 2 | 589824 |
| 3 | 314928 |
| 4 | 435600 |
| 5 | 802944 |
| 6 | 1679616 |
| 7 | 3852288 |
| 8 | 9437184 |
| 9 | 23003136 |
| 10 | 47775744 |
| 11 | 95551488 |
| 12 | 191102976 |
| 13 | 389283840 |
| 14 | 807469056 |
| 15 | 1695744000 |
| 16 | 3588489216 |
| 17 | 7596343296 |
| 18 | 16057958400 |
| 19 | 33888927744 |
| 20 | 71430045696 |
| 21 | 150473539584 |