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) |
|---|---|
| 0 | 1 |
| 1 | 27 |
| 2 | 27 |
| 3 | 125 |
| 4 | 27 |
| 5 | 729 |
| 6 | 125 |
| 7 | 1331 |
| 8 | 27 |
| 9 | 729 |
| 10 | 729 |
| 11 | 3375 |
| 12 | 125 |
| 13 | 3375 |
| 14 | 1331 |
| 15 | 9261 |
| 16 | 27 |
| 17 | 729 |
| 18 | 729 |
| 19 | 3375 |
| 20 | 729 |
| 21 | 19683 |
| 22 | 3375 |
| 23 | 35937 |
| 24 | 125 |
| 25 | 3375 |
| 26 | 3375 |
| 27 | 15625 |
| 28 | 1331 |
| 29 | 35937 |
| 30 | 9261 |
| 31 | 79507 |
| 32 | 27 |
| 33 | 729 |
| 34 | 729 |
| 35 | 3375 |
| 36 | 729 |
| 37 | 19683 |
| 38 | 3375 |
| 39 | 35937 |
| 40 | 729 |
| 41 | 19683 |
| 42 | 19683 |
| 43 | 91125 |
| 44 | 3375 |
| 45 | 91125 |
| 46 | 35937 |
| 47 | 250047 |
| 48 | 125 |
| 49 | 3375 |
| 50 | 3375 |
| 51 | 15625 |