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 | -3 |
| 2 | 1 |
| 3 | -4 |
| 4 | 4 |
| 5 | -5 |
| 6 | 8 |
| 7 | -9 |
| 8 | 13 |
| 9 | -17 |
| 10 | 22 |
| 11 | -30 |
| 12 | 39 |
| 13 | -52 |
| 14 | 69 |
| 15 | -91 |
| 16 | 121 |
| 17 | -160 |
| 18 | 212 |
| 19 | -281 |
| 20 | 372 |
| 21 | -493 |
| 22 | 653 |
| 23 | -865 |
| 24 | 1146 |
| 25 | -1518 |
| 26 | 2011 |
| 27 | -2664 |
| 28 | 3529 |
| 29 | -4675 |
| 30 | 6193 |
| 31 | -8204 |
| 32 | 10868 |
| 33 | -14397 |
| 34 | 19072 |
| 35 | -25265 |
| 36 | 33469 |