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 | 3 |
| 2 | 81 |
| 3 | 6166 |
| 4 | 738482 |
| 5 | 111026387 |
| 6 | 18986502099 |
| 7 | 3529435151262 |
| 8 | 698068937559304 |