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 | -2 |
| 2 | 2 |
| 3 | -5 |
| 4 | 6 |
| 5 | -12 |
| 6 | 17 |
| 7 | -30 |
| 8 | 46 |
| 9 | -77 |
| 10 | 122 |
| 11 | -200 |
| 12 | 321 |
| 13 | -522 |
| 14 | 842 |
| 15 | -1365 |
| 16 | 2206 |
| 17 | -3572 |
| 18 | 5777 |
| 19 | -9350 |
| 20 | 15126 |
| 21 | -24477 |
| 22 | 39602 |
| 23 | -64080 |
| 24 | 103681 |
| 25 | -167762 |
| 26 | 271442 |
| 27 | -439205 |
| 28 | 710646 |
| 29 | -1149852 |
| 30 | 1860497 |
| 31 | -3010350 |
| 32 | 4870846 |
| 33 | -7881197 |
| 34 | 12752042 |
| 35 | -20633240 |
| 36 | 33385281 |