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 | 0 |
| 2 | 36 |
| 3 | 900 |
| 4 | 1225 |
| 5 | 7056 |
| 6 | 32400 |
| 7 | 41616 |
| 8 | 44100 |
| 9 | 88209 |
| 10 | 108900 |
| 11 | 298116 |
| 12 | 705600 |
| 13 | 1368900 |
| 14 | 1413721 |
| 15 | 1498176 |
| 16 | 2924100 |
| 17 | 5336100 |
| 18 | 8643600 |
| 19 | 8820900 |
| 20 | 9217296 |
| 21 | 10432900 |
| 22 | 15210000 |
| 23 | 24147396 |
| 24 | 37088100 |
| 25 | 48024900 |
| 26 | 50893956 |
| 27 | 50979600 |
| 28 | 52490025 |
| 29 | 55353600 |
| 30 | 80568576 |