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 | 1 |
| 2 | 13 |
| 3 | 1093 |
| 4 | 167309 |
| 5 | 1033369 |
| 6 | 7883077 |
| 7 | 974928839 |
| 8 | 685325330447 |
| 9 | 384532463201461 |
| 10 | 36815155568146289 |
| 11 | 229925116170082520417 |
| 12 | 148014988051032245586139 |
| 13 | 12100604707837079041828993 |
| 14 | 1155600708425254785803483981 |
| 15 | 1006197859457454560045466031133 |