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 | 8 |
| 1 | 60 |
| 2 | 850 |
| 3 | 16380 |
| 4 | 358258 |
| 5 | 8253300 |
| 6 | 194402650 |
| 7 | 4624699020 |
| 8 | 110523825058 |
| 9 | 2647111898340 |
| 10 | 63466433646250 |
| 11 | 1522433108644860 |
| 12 | 36529334450076658 |
| 13 | 876595894555956180 |
| 14 | 21037008518317046650 |
| 15 | 504872725633265889900 |