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 | 8 |
| 2 | 144 |
| 3 | 2432 |
| 4 | 40000 |
| 5 | 649728 |
| 6 | 10486784 |
| 7 | 168681472 |
| 8 | 2708038656 |
| 9 | 43425996800 |
| 10 | 695894425600 |
| 11 | 11146676797440 |
| 12 | 178493059563520 |
| 13 | 2857665426882560 |
| 14 | 45744737668300800 |
| 15 | 732196083173687296 |
| 16 | 11718755500209471488 |