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 | 0 |
| 1 | 1 |
| 2 | 8256 |
| 3 | 2392578 |
| 4 | 134225920 |
| 5 | 3051796875 |
| 6 | 39182222016 |
| 7 | 339111948196 |
| 8 | 2199024304128 |
| 9 | 11438398618965 |
| 10 | 50000005000000 |
| 11 | 189874926535206 |
| 12 | 641959250190336 |
| 13 | 1968688224223903 |
| 14 | 5556003465485760 |
| 15 | 14596463098125000 |
| 16 | 36028797153181696 |
| 17 | 84188913484869801 |