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 | 72 |
| 2 | 1300 |
| 3 | 31752 |
| 4 | 872644 |
| 5 | 25170552 |
| 6 | 741453700 |
| 7 | 22051219752 |
| 8 | 658764967684 |
| 9 | 19722455410392 |
| 10 | 591076720682500 |
| 11 | 17723450167663752 |
| 12 | 531571748759349124 |
| 13 | 15945186209351359032 |
| 14 | 478326193010497869700 |
| 15 | 14349345894391097803752 |