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 | 9 |
| 2 | 65 |
| 3 | 720 |
| 4 | 14425 |
| 5 | 451481 |
| 6 | 25462352 |
| 7 | 2259371001 |
| 8 | 359730429763 |
| 9 | 90571705672192 |
| 10 | 40745743533702439 |
| 11 | 29115984372311031043 |
| 12 | 37023356202692415717856 |
| 13 | 75090733417483065667600023 |
| 14 | 269938147719275944289836747059 |