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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | -12 |
| 5 | 76 |
| 6 | -480 |
| 7 | 4264 |
| 8 | -45248 |
| 9 | 514180 |
| 10 | -6418080 |
| 11 | 89205348 |
| 12 | -1356339600 |
| 13 | 22268993280 |
| 14 | -393425899776 |
| 15 | 7452539807088 |
| 16 | -150601672807680 |
| 17 | 3232773233449104 |
| 18 | -73469416841374464 |
| 19 | 1762493272462111632 |
[0,1,0,1,-12,76,-480,4264,-45248,514180,-6418080, 89205348,-1356339600,22268993280,-393425899776, 7452539807088,-150601672807680,3232773233449104, -73469416841374464,1762493272462111632] |