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) |
|---|---|
| 2 | 0 |
| 3 | 25 |
| 4 | 9 |
| 5 | 441 |
| 6 | 4 |
| 7 | 2025 |
| 8 | 225 |
| 9 | 5929 |
| 10 | 36 |
| 11 | 13689 |
| 12 | 1225 |
| 13 | 27225 |
| 14 | 144 |
| 15 | 48841 |
| 16 | 3969 |
| 17 | 81225 |
| 18 | 400 |
| 19 | 127449 |
| 20 | 9801 |
| 21 | 190969 |
| 22 | 900 |
| 23 | 275625 |
| 24 | 20449 |
| 25 | 385641 |
| 26 | 1764 |
| 27 | 525625 |
| 28 | 38025 |
| 29 | 700569 |
| 30 | 3136 |
| 31 | 915849 |
| 32 | 65025 |
| 33 | 1177225 |
| 34 | 5184 |
| 35 | 1490841 |
| 36 | 104329 |
| 37 | 1863225 |
| 38 | 8100 |