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 | 4 |
| 3 | 5 |
| 4 | 11 |
| 5 | -6 |
| 6 | -22 |
| 7 | -4 |
| 8 | 155 |
| 9 | 16 |
| 10 | -182 |
| 11 | -158 |
| 12 | 376 |
| 13 | 56 |
| 14 | -1456 |
| 15 | 680 |
| 16 | 23155 |
| 17 | -4966 |
| 18 | -28674 |
| 19 | 6132 |
| 20 | 117946 |
| 21 | 15792 |
| 22 | -415426 |
| 23 | -162814 |
| 24 | 512550 |
| 25 | 333904 |
| 26 | -4231332 |
| 27 | 235968 |
| 28 | 15171332 |
| 29 | -5259270 |
| 30 | -68578566 |
| 31 | 15199212 |
| 32 | 736983115 |
| 33 | -4403208 |
| 34 | -1097465342 |