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 | 1 |
| 2 | 25 |
| 3 | 676 |
| 4 | 18225 |
| 5 | 491401 |
| 6 | 13249600 |
| 7 | 357247801 |
| 8 | 9632441025 |
| 9 | 259718659876 |
| 10 | 7002771375625 |
| 11 | 188815108482001 |
| 12 | 5091005157638400 |
| 13 | 137268324147754801 |
| 14 | 3701153746831741225 |
| 15 | 99793882840309258276 |
| 16 | 2690733682941518232225 |