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 | -2 |
| 1 | 3 |
| 2 | -1 |
| 3 | 0 |
| 4 | 3 |
| 5 | -7 |
| 6 | 14 |
| 7 | -25 |
| 8 | 43 |
| 9 | -72 |
| 10 | 119 |
| 11 | -195 |
| 12 | 318 |
| 13 | -517 |
| 14 | 839 |
| 15 | -1360 |
| 16 | 2203 |
| 17 | -3567 |
| 18 | 5774 |
| 19 | -9345 |
| 20 | 15123 |
| 21 | -24472 |
| 22 | 39599 |
| 23 | -64075 |
| 24 | 103678 |
| 25 | -167757 |
| 26 | 271439 |
| 27 | -439200 |
| 28 | 710643 |
| 29 | -1149847 |
| 30 | 1860494 |
| 31 | -3010345 |
| 32 | 4870843 |
| 33 | -7881192 |