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 | 24 |
| 3 | 235 |
| 4 | 2922 |
| 5 | 38169 |
| 6 | 494596 |
| 7 | 6375379 |
| 8 | 82191766 |
| 9 | 1059980385 |
| 10 | 13670322763 |
| 11 | 176299392634 |
| 12 | 2273637717194 |
| 13 | 29321902354841 |
| 14 | 378149186319554 |
| 15 | 4876791443282017 |
| 16 | 62893416210079645 |
| 17 | 811103334429880838 |
| 18 | 10460373436120693109 |
| 19 | 134901938876902858230 |
| 20 | 1739759409373842739031 |