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 | 25 |
| 2 | 719 |
| 3 | 3394 |
| 4 | 110924 |
| 5 | 3254726 |
| 6 | 63460724 |
| 7 | 1577145547 |
| 8 | 38948760562 |
| 9 | 916245375526 |
| 10 | 22100022039548 |
| 11 | 535029907435345 |
| 12 | 12865137927698631 |