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 | 108 |
| 3 | 228 |
| 4 | 13710 |
| 5 | 44790 |
| 6 | 6996920 |
| 7 | 11128712 |
| 8 | 12306056 |
| 9 | 3816547290 |
| 10 | 7838911147538198 |