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 | 16 |
| 2 | 100 |
| 3 | 400 |
| 4 | 3136 |
| 5 | 7056 |
| 6 | 14400 |
| 7 | 48400 |
| 8 | 81796 |
| 9 | 132496 |
| 10 | 313600 |
| 11 | 462400 |
| 12 | 665856 |
| 13 | 1299600 |
| 14 | 1768900 |
| 15 | 2371600 |
| 16 | 4096576 |
| 17 | 5290000 |
| 18 | 6760000 |
| 19 | 10732176 |
| 20 | 13351716 |
| 21 | 16483600 |
| 22 | 24601600 |
| 23 | 29767936 |
| 24 | 35808256 |
| 25 | 50979600 |
| 26 | 60372900 |
| 27 | 71166096 |
| 28 | 97614400 |
| 29 | 113635600 |
| 30 | 131790400 |
| 31 | 175403536 |