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 | 66048 |
| 3 | 64599606 |
| 4 | 8590458880 |
| 5 | 381474609375 |
| 6 | 8463359955456 |
| 7 | 116315398231228 |
| 8 | 1125900443713536 |
| 9 | 8338592593225485 |
| 10 | 50000005000000000 |
| 11 | 252723527218359186 |
| 12 | 1109305584328900608 |
| 13 | 4325208028619914891 |
| 14 | 15245673509292925440 |
| 15 | 49263062956171875000 |
| 16 | 147573953139432226816 |