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) |
|---|---|
| 2 | 1 |
| 3 | 43 |
| 4 | 1591 |
| 5 | 57535 |
| 6 | 2072815 |
| 7 | 74630671 |
| 8 | 2686760143 |
| 9 | 96723701071 |
| 10 | 3482055254095 |
| 11 | 125354001240655 |
| 12 | 4512744117222991 |
| 13 | 162458788655384143 |
| 14 | 5848516394205967951 |
| 15 | 210546590207087679055 |
| 16 | 7579677247549193442895 |
| 17 | 272868380912335185925711 |