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) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 121 |
| 4 | 625 |
| 5 | 18769 |
| 6 | 2401 |
| 7 | 131769 |
| 8 | 579121 |
| 9 | 50822641 |
| 10 | 54479161 |
| 11 | 7007531521 |
| 12 | 7399612441 |
| 13 | 1313299956049 |
| 14 | 1372958223289 |
| 15 | 1429834803049 |
| 16 | 5936819760481 |
| 17 | 1775966959381729 |
| 18 | 203755669038601 |
| 19 | 75787776947048401 |
| 20 | 3117562300468225 |