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 | -19 |
| 2 | 133 |
| 3 | -304 |
| 4 | -931 |
| 5 | 5966 |
| 6 | -3743 |
| 7 | -30305 |
| 8 | 25384 |
| 9 | 124963 |
| 10 | 115330 |
| 11 | -927751 |
| 12 | -921272 |
| 13 | 3677203 |
| 14 | 4569747 |
| 15 | -823517 |
| 16 | -29704847 |
| 17 | -35843823 |
| 18 | 67385590 |
| 19 | 181844002 |
| 20 | 266220704 |
| 21 | -578824816 |
| 22 | -1690299907 |
| 23 | -654094418 |
| 24 | 3019554594 |