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 | 2 |
| 2 | 6 |
| 3 | 1926 |
| 4 | 2471058 |
| 5 | 38259378 |
| 6 | 41218326 |
| 7 | 600917778 |
| 8 | 114130755846 |
| 9 | 600929334 |
| 10 | 28312987734 |
| 11 | 342397209654 |
| 12 | 722113254 |
| 13 | 15559317470256498 |
| 14 | 84332966140854 |
| 15 | 20543988255894 |
| 16 | 1314244621926 |
| 17 | 600935058 |
| 18 | 6739452314987202 |