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 | 16 |
| 1 | 0 |
| 2 | 0 |
| 3 | 98 |
| 4 | -96 |
| 5 | 0 |
| 6 | 1000 |
| 7 | -1936 |
| 8 | 2064 |
| 9 | 5070 |
| 10 | -19012 |
| 11 | 31950 |
| 12 | 9024 |
| 13 | -152014 |
| 14 | 383616 |
| 15 | -298186 |
| 16 | -832320 |
| 17 | 3575922 |
| 18 | -5486624 |
| 19 | -1012506 |
| 20 | 27088992 |
| 21 | -65115000 |
| 22 | 53200524 |
| 23 | 147217176 |
| 24 | -608004040 |
| 25 | 947874280 |
| 26 | 189048900 |