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 | 16 |
| 3 | 697 |
| 4 | 34958 |
| 5 | 1947321 |
| 6 | 114675898 |
| 7 | 7026150623 |
| 8 | 443114008903 |
| 9 | 28575438072945 |
| 10 | 1875587744568411 |