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 | 22 |
| 2 | 528 |
| 3 | 12144 |
| 4 | 279818 |
| 5 | 6435792 |
| 6 | 148035360 |
| 7 | 3404812752 |
| 8 | 78310972608 |
| 9 | 1801152369478 |
| 10 | 41426510921664 |
| 11 | 952809751186128 |
| 12 | 21914624425304688 |
| 13 | 504036361781716368 |
| 14 | 11592836324384010432 |
| 15 | 266635235460831961152 |
| 16 | 6132610415677439376122 |
| 17 | 141050039560581098947824 |