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 | 9 |
| 1 | 243 |
| 2 | 6561 |
| 3 | 177147 |
| 4 | 4782969 |
| 5 | 129140163 |
| 6 | 3486784401 |
| 7 | 94143178827 |
| 8 | 2541865828329 |
| 9 | 68630377364883 |
| 10 | 1853020188851841 |
| 11 | 50031545098999707 |
| 12 | 1350851717672992089 |
| 13 | 36472996377170786403 |
| 14 | 984770902183611232881 |
| 15 | 26588814358957503287787 |