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 | 57 |
| 2 | 2981 |
| 3 | 204779 |
| 4 | 13597573 |
| 5 | 884977259 |
| 6 | 58232200212 |
| 7 | 3842974545029 |
| 8 | 253291756984373 |
| 9 | 16698512969146104 |
| 10 | 1101377884320804108 |
| 11 | 72647284903645567684 |
| 12 | 4791845462621985366247 |
| 13 | 316083646998469552591720 |