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 | 27 |
| 2 | 729 |
| 3 | 19683 |
| 4 | 474552 |
| 5 | 10941048 |
| 6 | 240641848 |
| 7 | 5106219048 |
| 8 | 105087226959 |
| 9 | 2107490863661 |
| 10 | 41332013859375 |
| 11 | 794974954718853 |
| 12 | 15030454569975872 |
| 13 | 279880270014528000 |
| 14 | 5140991504979000000 |
| 15 | 93278442949595408448 |