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 | 0 |
| 2 | -2 |
| 3 | -2 |
| 4 | 4 |
| 5 | 10 |
| 6 | -4 |
| 7 | -38 |
| 8 | -22 |
| 9 | 114 |
| 10 | 188 |
| 11 | -234 |
| 12 | -914 |
| 13 | -18 |
| 14 | 3376 |
| 15 | 3338 |
| 16 | -9416 |
| 17 | -21718 |
| 18 | 14416 |
| 19 | 96338 |
| 20 | 39274 |
| 21 | -328558 |
| 22 | -471344 |
| 23 | 795398 |
| 24 | 2586064 |
| 25 | -517690 |
| 26 | -10453424 |
| 27 | -8272658 |
| 28 | 32186818 |
| 29 | 63596494 |
| 30 | -61876584 |
| 31 | -307070174 |
| 32 | -62655330 |
| 33 | 1129250706 |
| 34 | 1356328788 |