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 | 9 |
| 2 | 324 |
| 3 | 6561 |
| 4 | 104976 |
| 5 | 1476225 |
| 6 | 19131876 |
| 7 | 234365481 |
| 8 | 2754990144 |
| 9 | 31381059609 |
| 10 | 348678440100 |
| 11 | 3797108212689 |
| 12 | 40669853253264 |
| 13 | 429575324987601 |
| 14 | 4483851321172356 |
| 15 | 46325504721296025 |
| 16 | 474373168346071296 |