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 | 2 |
| 1 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 5 |
| 5 | 11 |
| 6 | 103 |
| 7 | 71 |
| 8 | 661 |
| 9 | 269 |
| 10 | 329891 |
| 11 | 39916801 |
| 12 | 2834329 |
| 13 | 75024347 |
| 14 | 3790360487 |
| 15 | 46271341 |
| 16 | 1059511 |
| 17 | 1000357 |
| 18 | 123610951 |
| 19 | 1713311273363831 |
| 20 | 117876683047 |
| 21 | 2703875815783 |
| 22 | 93799610095769647 |
| 23 | 148139754736864591 |
| 24 | 765041185860961084291 |
| 25 | 38681321803817920159601 |