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 | 86 |
| 2 | 3655 |
| 3 | 102340 |
| 4 | 2123555 |
| 5 | 34826302 |
| 6 | 470155077 |
| 7 | 5373200880 |
| 8 | 53060358690 |
| 9 | 459856441980 |
| 10 | 3540894603246 |
| 11 | 24464362713336 |
| 12 | 152902266958350 |
| 13 | 870366750378300 |
| 14 | 4538340912686850 |
| 15 | 21784036380896880 |
| 16 | 96666661440229905 |
| 17 | 398039194165652550 |