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 | -17 |
| 2 | 119 |
| 3 | -408 |
| 4 | 476 |
| 5 | 1309 |
| 6 | -5236 |
| 7 | 4233 |
| 8 | 8602 |
| 9 | -15470 |
| 10 | -4250 |
| 11 | 5236 |
| 12 | 45815 |
| 13 | -21182 |
| 14 | -117776 |
| 15 | 101065 |
| 16 | 46767 |
| 17 | 36685 |
| 18 | -36771 |
| 19 | -267036 |
| 20 | 143514 |
| 21 | -18241 |
| 22 | 486285 |
| 23 | 81753 |
| 24 | -1007250 |
| 25 | 104006 |
| 26 | 165767 |
| 27 | 579292 |
| 28 | 78829 |
| 29 | 187510 |