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 | 1 |
| 1 | 13 |
| 2 | 41 |
| 3 | -2795 |
| 4 | -52079 |
| 5 | 754013 |
| 6 | 43132729 |
| 7 | -18356507 |
| 8 | -38885559775 |
| 9 | -486715213907 |
| 10 | 38468867080009 |
| 11 | 1123090745841077 |
| 12 | -39563985152718671 |
| 13 | -2239399192597236995 |
| 14 | 36722281790359787609 |
| 15 | 4490393016408925933957 |
| 16 | -12131671824174755067839 |