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) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 225 |
| 3 | 441 |
| 4 | 2025 |
| 5 | 3025 |
| 6 | 8281 |
| 7 | 11025 |
| 8 | 23409 |
| 9 | 29241 |
| 10 | 53361 |
| 11 | 64009 |
| 12 | 105625 |
| 13 | 123201 |
| 14 | 189225 |
| 15 | 216225 |
| 16 | 314721 |
| 17 | 354025 |
| 18 | 494209 |
| 19 | 549081 |
| 20 | 741321 |
| 21 | 815409 |
| 22 | 1071225 |
| 23 | 1168561 |
| 24 | 1500625 |
| 25 | 1625625 |
| 26 | 2047761 |
| 27 | 2205225 |
| 28 | 2732409 |
| 29 | 2927521 |