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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | -40 |
| 4 | 0 |
| 5 | -480 |
| 6 | 246400 |
| 7 | -8320 |
| 8 | 51251200 |
| 9 | -12197916160 |
| 10 | 11394406400 |
| 11 | -15296025241600 |
| 12 | 2348235343872000 |
| 13 | -17026923803402240 |
| 14 | 10977173716094976000 |
| 15 | -1257676453660275015680 |
[1,0,0,-40,0,-480,246400,-8320,51251200, -12197916160,11394406400,-15296025241600, 2348235343872000,-17026923803402240, 10977173716094976000,-1257676453660275015680] |