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 | 1 |
| 2 | 4 |
| 3 | 9 |
| 4 | 16 |
| 5 | 81 |
| 6 | 10000 |
| 7 | 640000 |
| 8 | 7290000 |
| 9 | 40960000 |
| 10 | 156250000 |
| 11 | 188210961 |
| 12 | 466560000 |
| 13 | 1176490000 |
| 14 | 2621440000 |
| 15 | 5314410000 |
| 16 | 10000000000 |
| 17 | 17715610000 |
| 18 | 29859840000 |
| 19 | 48268090000 |
| 20 | 75295360000 |
| 21 | 113906250000 |
| 22 | 167772160000 |
| 23 | 241375690000 |
| 24 | 340122240000 |
| 25 | 470458810000 |