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 | 1280565 |
| 2 | 1340235 |
| 3 | 71526069316 |
| 4 | 75257076284 |
| 5 | 1453520375775 |
| 6 | 1561230417825 |
| 7 | 1568650892445 |
| 8 | 1995690781539 |
| 9 | 2714480497936 |
| 10 | 2854320218864 |
| 11 | 5776910172896 |
| 12 | 5864460215584 |
| 13 | 5818350517628 |
| 14 | 6516910297732 |
| 15 | 6111770382135 |
| 16 | 6139270339785 |
| 17 | 9176850735616 |
| 18 | 9194440569344 |
| 19 | 114552504952875 |
| 20 | 123277906567125 |