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 | 81 |
| 3 | 243 |
| 4 | 343 |
| 5 | 1849 |
| 6 | 2197 |
| 7 | 2401 |
| 8 | 4489 |
| 9 | 5329 |
| 10 | 6241 |
| 11 | 6561 |
| 12 | 16129 |
| 13 | 16807 |
| 14 | 19683 |
| 15 | 22801 |
| 16 | 26569 |
| 17 | 28561 |
| 18 | 37249 |
| 19 | 44521 |
| 20 | 49729 |
| 21 | 58081 |
| 22 | 59049 |
| 23 | 79507 |
| 24 | 80089 |
| 25 | 94249 |
| 26 | 109561 |
| 27 | 117649 |
| 28 | 134689 |
| 29 | 177147 |
| 30 | 177241 |
| 31 | 187489 |
| 32 | 214369 |
| 33 | 237169 |
| 34 | 361201 |
| 35 | 371293 |
| 36 | 375769 |
| 37 | 383161 |
| 38 | 389017 |