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 | 0 |
| 1 | 1 |
| 2 | -6 |
| 3 | -3 |
| 4 | 82 |
| 5 | -84 |
| 6 | -444 |
| 7 | 769 |
| 8 | 1110 |
| 9 | -2643 |
| 10 | -860 |
| 11 | 2901 |
| 12 | -1176 |
| 13 | 6277 |
| 14 | 1170 |
| 15 | -21315 |
| 16 | -2308 |
| 17 | 14244 |
| 18 | 29442 |
| 19 | 15540 |
| 20 | -58194 |
| 21 | -13338 |
| 22 | -31886 |
| 23 | 4080 |
| 24 | 176682 |
| 25 | -70715 |
| 26 | -51240 |
| 27 | 81489 |
| 28 | -135728 |
| 29 | 13137 |
| 30 | -205350 |
| 31 | 58826 |
| 32 | 355974 |
| 33 | 16380 |
| 34 | 530932 |
| 35 | -457944 |
| 36 | -938748 |
| 37 | 140329 |
| 38 | 99462 |
| 39 | 317157 |