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 | 7 |
| 3 | 97 |
| 4 | 2143 |
| 5 | 68641 |
| 6 | 3011263 |
| 7 | 173773153 |
| 8 | 12785668351 |
| 9 | 1169623688353 |
| 10 | 130305512589247 |
| 11 | 17376934722756577 |
| 12 | 2733655173624167551 |
| 13 | 501034099176714373921 |
| 14 | 105847486567006696384831 |