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 | 243 |
| 2 | 59049 |
| 3 | 2703137 |
| 4 | 39387861 |
| 5 | 343454446 |
| 6 | 2226551034 |
| 7 | 11992802966 |
| 8 | 57005353680 |
| 9 | 246381084601 |
| 10 | 983376748824 |
| 11 | 3659208824870 |
| 12 | 12782748762891 |
| 13 | 42154099154095 |
| 14 | 131837732493171 |
| 15 | 392589737558511 |
| 16 | 1116957062770205 |
| 17 | 3045559149318525 |