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 | 4 |
| 2 | 9 |
| 3 | 64 |
| 4 | 81 |
| 5 | 144 |
| 6 | 225 |
| 7 | 324 |
| 8 | 441 |
| 9 | 625 |
| 10 | 1089 |
| 11 | 1681 |
| 12 | 2601 |
| 13 | 3600 |
| 14 | 4096 |
| 15 | 5184 |
| 16 | 6084 |
| 17 | 8464 |
| 18 | 12544 |
| 19 | 13689 |
| 20 | 16641 |
| 21 | 19044 |
| 22 | 19600 |
| 23 | 25281 |
| 24 | 27225 |
| 25 | 28224 |
| 26 | 29584 |
| 27 | 36864 |
| 28 | 38025 |
| 29 | 39204 |
| 30 | 45369 |
| 31 | 46656 |
| 32 | 47524 |
| 33 | 51984 |
| 34 | 56169 |
| 35 | 74529 |
| 36 | 87025 |
| 37 | 88804 |
| 38 | 91809 |
| 39 | 92416 |
| 40 | 95481 |
| 41 | 103684 |