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 | 25 |
| 4 | 25 |
| 5 | 225 |
| 6 | 225 |
| 7 | 49 |
| 8 | 441 |
| 9 | 1225 |
| 10 | 1225 |
| 11 | 441 |
| 12 | 49 |
| 13 | 81 |
| 14 | 81 |
| 15 | 2025 |
| 16 | 2025 |
| 17 | 121 |
| 18 | 3025 |
| 19 | 27225 |
| 20 | 27225 |
| 21 | 3025 |
| 22 | 121 |
| 23 | 245025 |
| 24 | 245025 |
| 25 | 169 |
| 26 | 511225 |
| 27 | 1656369 |
| 28 | 1656369 |
| 29 | 511225 |
| 30 | 169 |
| 31 | 8281 |
| 32 | 1002001 |
| 33 | 9018009 |
| 34 | 9018009 |
| 35 | 1002001 |
| 36 | 8281 |
| 37 | 225 |
| 38 | 11025 |
| 39 | 207025 |
| 40 | 1863225 |