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 | 5 |
| 2 | 75 |
| 3 | 500 |
| 4 | 4375 |
| 5 | 34375 |
| 6 | 281250 |
| 7 | 2265625 |
| 8 | 18359375 |
| 9 | 148437500 |
| 10 | 1201171875 |
| 11 | 9716796875 |
| 12 | 78613281250 |
| 13 | 635986328125 |
| 14 | 5145263671875 |
| 15 | 41625976562500 |
| 16 | 336761474609375 |
| 17 | 2724456787109375 |
| 18 | 22041320800781250 |
| 19 | 178318023681640625 |