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 | 17 |
| 2 | 255 |
| 3 | 3315 |
| 4 | 36873 |
| 5 | 358785 |
| 6 | 3490695 |
| 7 | 42117075 |
| 8 | 590951025 |
| 9 | 7589122065 |
| 10 | 91863766575 |
| 11 | 1430858704275 |
| 12 | 26509807949625 |
| 13 | 422022682706625 |
| 14 | 6430806556349175 |
| 15 | 132605511681517875 |
| 16 | 2979787265909078625 |