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 | 1 |
| 2 | 5 |
| 3 | 9 |
| 4 | 25 |
| 5 | 45 |
| 6 | 81 |
| 7 | 125 |
| 8 | 225 |
| 9 | 405 |
| 10 | 625 |
| 11 | 729 |
| 12 | 1125 |
| 13 | 2025 |
| 14 | 3125 |
| 15 | 3645 |
| 16 | 5625 |
| 17 | 6561 |
| 18 | 10125 |
| 19 | 15625 |
| 20 | 18225 |
| 21 | 28125 |
| 22 | 32805 |
| 23 | 50625 |
| 24 | 59049 |
| 25 | 78125 |
| 26 | 91125 |
| 27 | 140625 |
| 28 | 164025 |
| 29 | 253125 |
| 30 | 295245 |
| 31 | 390625 |
| 32 | 455625 |
| 33 | 531441 |
| 34 | 703125 |
| 35 | 820125 |
| 36 | 1265625 |
| 37 | 1476225 |
| 38 | 1953125 |