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 | 9 |
| 2 | 27 |
| 3 | 243 |
| 4 | 2187 |
| 5 | 177147 |
| 6 | 1594323 |
| 7 | 129140163 |
| 8 | 1162261467 |
| 9 | 94143178827 |
| 10 | 68630377364883 |
| 11 | 617673396283947 |
| 12 | 450283905890997363 |
| 13 | 36472996377170786403 |
| 14 | 328256967394537077627 |
| 15 | 26588814358957503287787 |