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 | 49 |
| 3 | 81 |
| 4 | 225 |
| 5 | 289 |
| 6 | 529 |
| 7 | 625 |
| 8 | 1089 |
| 9 | 1521 |
| 10 | 1681 |
| 11 | 2209 |
| 12 | 3025 |
| 13 | 5041 |
| 14 | 6561 |
| 15 | 7569 |
| 16 | 7921 |
| 17 | 9025 |
| 18 | 10609 |
| 19 | 12769 |
| 20 | 14641 |
| 21 | 16129 |
| 22 | 16641 |
| 23 | 18769 |
| 24 | 20449 |
| 25 | 22801 |
| 26 | 23409 |
| 27 | 28561 |
| 28 | 31329 |
| 29 | 36481 |
| 30 | 37249 |
| 31 | 39601 |
| 32 | 40401 |
| 33 | 46225 |
| 34 | 49729 |
| 35 | 50625 |
| 36 | 69169 |
| 37 | 70225 |
| 38 | 73441 |
| 39 | 78961 |