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 | 3 |
| 2 | 8 |
| 3 | 38 |
| 4 | 264 |
| 5 | 2896 |
| 6 | 37638 |
| 7 | 639830 |
| 8 | 12156759 |
| 9 | 279605448 |
| 10 | 8108557990 |
| 11 | 251365297667 |
| 12 | 9300516013674 |