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 | 59049 |
| 2 | 14348907 |
| 3 | 43046721 |
| 4 | 129140163 |
| 5 | 387420489 |
| 6 | 3486784401 |
| 7 | 10460353203 |
| 8 | 31381059609 |
| 9 | 847288609443 |
| 10 | 68630377364883 |
| 11 | 205891132094649 |
| 12 | 1853020188851841 |
| 13 | 5559060566555523 |
| 14 | 50031545098999707 |
| 15 | 150094635296999121 |
| 16 | 450283905890997363 |
| 17 | 1350851717672992089 |
| 18 | 4052555153018976267 |
| 19 | 12157665459056928801 |