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 | 1 |
| 2 | 385 |
| 3 | 6569479 |
| 4 | 5421836400001 |
| 5 | 218857429741036363207 |
| 6 | 432771509734663800164593788001 |
| 7 | 41931064368881878511703371604583698172807 |