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) |
|---|---|
| 1 | 1 |
| 2 | -2 |
| 3 | 1 |
| 4 | 6 |
| 5 | -6 |
| 6 | 1 |
| 7 | -23 |
| 8 | 36 |
| 9 | -15 |
| 10 | 1 |
| 11 | 106 |
| 12 | -229 |
| 13 | 160 |
| 14 | -37 |
| 15 | 1 |
| 16 | -567 |
| 17 | 1574 |
| 18 | -1566 |
| 19 | 650 |
| 20 | -93 |
| 21 | 1 |
| 22 | 3434 |
| 23 | -11706 |
| 24 | 15248 |
| 25 | -9310 |
| 26 | 2572 |
| 27 | -238 |
| 28 | 1 |
| 29 | -23137 |
| 30 | 93831 |
| 31 | -151933 |
| 32 | 123814 |
| 33 | -52136 |
| 34 | 10175 |
| 35 | -616 |
| 36 | 1 |