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 | 4 |
| 2 | 256 |
| 3 | 500 |
| 4 | 625 |
| 5 | 2500 |
| 6 | 4225 |
| 7 | 11664 |
| 8 | 12800 |
| 9 | 14580 |
| 10 | 81920 |
| 11 | 250000 |
| 12 | 262144 |
| 13 | 364500 |
| 14 | 531441 |
| 15 | 800000 |
| 16 | 2125764 |
| 17 | 4734976 |
| 18 | 11943936 |
| 19 | 27541504 |
| 20 | 64000000 |
| 21 | 84050000 |
| 22 | 107868672 |
| 23 | 156250000 |
| 24 | 162542848 |
| 25 | 195312500 |
| 26 | 253472000 |
| 27 | 512635136 |
| 28 | 544195584 |
| 29 | 607642880 |
| 30 | 701146368 |
| 31 | 770786560 |