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 | 100 |
| 3 | 1125 |
| 4 | 10000 |
| 5 | 78125 |
| 6 | 562500 |
| 7 | 3828125 |
| 8 | 25000000 |
| 9 | 158203125 |
| 10 | 976562500 |
| 11 | 5908203125 |
| 12 | 35156250000 |
| 13 | 206298828125 |
| 14 | 1196289062500 |
| 15 | 6866455078125 |
| 16 | 39062500000000 |
| 17 | 220489501953125 |
| 18 | 1235961914062500 |
| 19 | 6885528564453125 |
| 20 | 38146972656250000 |
| 21 | 210285186767578125 |