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 | 24 |
| 3 | 246 |
| 4 | 2491 |
| 5 | 25009 |
| 6 | 249940 |
| 7 | 2499751 |
| 8 | 25000026 |
| 9 | 249997694 |
| 10 | 2499999305 |
| 11 | 24999974939 |
| 12 | 249999962302 |