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 | -4 |
| 2 | 8 |
| 3 | -12 |
| 4 | 15 |
| 5 | -16 |
| 6 | 14 |
| 7 | -8 |
| 8 | -3 |
| 9 | 20 |
| 10 | -44 |
| 11 | 76 |
| 12 | -117 |
| 13 | 168 |
| 14 | -230 |
| 15 | 304 |
| 16 | -391 |
| 17 | 492 |
| 18 | -608 |
| 19 | 740 |
| 20 | -889 |
| 21 | 1056 |
| 22 | -1242 |
| 23 | 1448 |
| 24 | -1675 |
| 25 | 1924 |
| 26 | -2196 |
| 27 | 2492 |
| 28 | -2813 |
| 29 | 3160 |
| 30 | -3534 |
| 31 | 3936 |
| 32 | -4367 |
| 33 | 4828 |
| 34 | -5320 |
| 35 | 5844 |
| 36 | -6401 |
| 37 | 6992 |
| 38 | -7618 |
| 39 | 8280 |
| 40 | -8979 |
| 41 | 9716 |