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 | -5 |
| 2 | -8 |
| 3 | 7 |
| 4 | 31 |
| 5 | 10 |
| 6 | -83 |
| 7 | -113 |
| 8 | 136 |
| 9 | 475 |
| 10 | 67 |
| 11 | -1358 |
| 12 | -1559 |
| 13 | 2515 |
| 14 | 7192 |
| 15 | -353 |
| 16 | -21929 |
| 17 | -20870 |
| 18 | 44917 |
| 19 | 107527 |
| 20 | -27224 |
| 21 | -349805 |
| 22 | -268133 |
| 23 | 781282 |
| 24 | 1585681 |
| 25 | -758165 |
| 26 | -5515208 |
| 27 | -3240713 |
| 28 | 13304911 |
| 29 | 23027050 |
| 30 | -16887683 |
| 31 | -85968833 |
| 32 | -35305784 |