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 | 0 |
| 1 | 144 |
| 2 | 484 |
| 3 | 4900 |
| 4 | 8464 |
| 5 | 30976 |
| 6 | 44100 |
| 7 | 108900 |
| 8 | 141376 |
| 9 | 283024 |
| 10 | 348100 |
| 11 | 611524 |
| 12 | 725904 |
| 13 | 1166400 |
| 14 | 1350244 |
| 15 | 2033476 |
| 16 | 2310400 |
| 17 | 3312400 |
| 18 | 3709476 |
| 19 | 5116644 |
| 20 | 5664400 |
| 21 | 7573504 |
| 22 | 8305924 |
| 23 | 10824100 |
| 24 | 11778624 |
| 25 | 15023376 |
| 26 | 16240900 |
| 27 | 20340100 |