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 | 5 |
| 2 | 73 |
| 3 | 1445 |
| 4 | 33001 |
| 5 | 819005 |
| 6 | 21460825 |
| 7 | 584307365 |
| 8 | 16367912425 |
| 9 | 468690849005 |
| 10 | 13657436403073 |
| 11 | 403676083788125 |
| 12 | 12073365010564729 |
| 13 | 364713572395983725 |
| 14 | 11111571997143198073 |
| 15 | 341034504521827105445 |
| 16 | 10534522198396293262825 |
| 17 | 327259338516161442321485 |