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 | 1 |
| 1 | 50 |
| 2 | 1625 |
| 3 | 43750 |
| 4 | 1063125 |
| 5 | 24281250 |
| 6 | 532890625 |
| 7 | 11386718750 |
| 8 | 238867578125 |
| 9 | 4946347656250 |
| 10 | 101481884765625 |
| 11 | 2068161621093750 |
| 12 | 41943091064453125 |
| 13 | 847579699707031250 |
| 14 | 17082562164306640625 |
| 15 | 343617765808105468750 |
| 16 | 6901873153839111328125 |