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 | 5 |
| 2 | 200 |
| 3 | 3375 |
| 4 | 40000 |
| 5 | 390625 |
| 6 | 3375000 |
| 7 | 26796875 |
| 8 | 200000000 |
| 9 | 1423828125 |
| 10 | 9765625000 |
| 11 | 64990234375 |
| 12 | 421875000000 |
| 13 | 2681884765625 |
| 14 | 16748046875000 |
| 15 | 102996826171875 |
| 16 | 625000000000000 |
| 17 | 3748321533203125 |
| 18 | 22247314453125000 |