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 | 1 |
| 3 | -242 |
| 4 | 1 |
| 5 | 3126 |
| 6 | -242 |
| 7 | -16806 |
| 8 | 1 |
| 9 | 58807 |
| 10 | 3126 |
| 11 | -161050 |
| 12 | -242 |
| 13 | 371294 |
| 14 | -16806 |
| 15 | -756492 |
| 16 | 1 |
| 17 | 1419858 |
| 18 | 58807 |
| 19 | -2476098 |
| 20 | 3126 |
| 21 | 4067052 |
| 22 | -161050 |
| 23 | -6436342 |
| 24 | -242 |
| 25 | 9768751 |
| 26 | 371294 |
| 27 | -14290100 |
| 28 | -16806 |
| 29 | 20511150 |
| 30 | -756492 |
| 31 | -28629150 |
| 32 | 1 |
| 33 | 38974100 |