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 | 9 |
| 2 | 9 |
| 3 | 81 |
| 4 | 18 |
| 5 | 225 |
| 6 | 81 |
| 7 | 441 |
| 8 | 72 |
| 9 | 729 |
| 10 | 225 |
| 11 | 1089 |
| 12 | 162 |
| 13 | 1521 |
| 14 | 441 |
| 15 | 2025 |
| 16 | 288 |
| 17 | 2601 |
| 18 | 729 |
| 19 | 3249 |
| 20 | 450 |
| 21 | 3969 |
| 22 | 1089 |
| 23 | 4761 |
| 24 | 648 |
| 25 | 5625 |
| 26 | 1521 |
| 27 | 6561 |
| 28 | 882 |
| 29 | 7569 |
| 30 | 2025 |
| 31 | 8649 |
| 32 | 1152 |
| 33 | 9801 |
| 34 | 2601 |
| 35 | 11025 |
| 36 | 1458 |
| 37 | 12321 |
| 38 | 3249 |
| 39 | 13689 |
| 40 | 1800 |
| 41 | 15129 |
| 42 | 3969 |
| 43 | 16641 |
| 44 | 2178 |
| 45 | 18225 |