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 | 3 |
| 2 | 37 |
| 3 | 743 |
| 4 | 20841 |
| 5 | 751019 |
| 6 | 33065677 |
| 7 | 1720166223 |
| 8 | 103243039057 |
| 9 | 7022246822099 |
| 10 | 533794001518581 |
| 11 | 44845718374382903 |
| 12 | 4126339884444745657 |
| 13 | 412678834162848948603 |
| 14 | 44573440429472131194781 |
| 15 | 5170931768652930067543199 |
| 16 | 641240112753392800506551457 |
| 17 | 84648865815216502596932335523 |