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 | 9 |
| 2 | -412 |
| 3 | -18683 |
| 4 | -252144 |
| 5 | -1853125 |
| 6 | -9077696 |
| 7 | -30353607 |
| 8 | -34217728 |
| 9 | 612579511 |
| 10 | 9000000000 |
| 11 | 97642052309 |
| 12 | 994840219648 |
| 13 | 9989395500627 |
| 14 | 99979338953216 |
| 15 | 999961556640625 |
| 16 | 9999931280523264 |
| 17 | 99999881412123503 |