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) |
|---|---|
| 0 | 1 |
| 1 | 8 |
| 2 | 209 |
| 3 | 10016 |
| 4 | 822321 |
| 5 | 98607816 |
| 6 | 16772776929 |
| 7 | 3755613340800 |
| 8 | 1089481085841825 |
| 9 | 392115220017568200 |
| 10 | 173351482189397931825 |
| 11 | 91513890536903699104800 |
| 12 | 57296185618906061753900625 |
| 13 | 41706416795344237885218165000 |
| 14 | 35120660862575611007699136530625 |