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 | 81 |
| 2 | 6561 |
| 3 | 248525 |
| 4 | 8244759 |
| 5 | 243794389 |
| 6 | 6897033117 |
| 7 | 189659424011 |
| 8 | 5142718466575 |
| 9 | 138294979168509 |
| 10 | 3702335938084439 |
| 11 | 98860585328779343 |
| 12 | 2635998227067669263 |
| 13 | 70227731343750962247 |
| 14 | 1870120121498081593459 |
| 15 | 49786813201495602614131 |