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) |
|---|---|
| 1 | 5 |
| 2 | 97 |
| 3 | 20161 |
| 4 | 161281 |
| 5 | 1451521 |
| 6 | 24908083201 |
| 7 | 83691159552001 |
| 8 | 1219553378446855442006016000001 |
| 9 | 923374789356965521888370970732110324333114258287231764529152000000000001 |