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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | -3 |
| 4 | 10 |
| 5 | -15 |
| 6 | 84 |
| 7 | -161 |
| 8 | -174 |
| 9 | 612 |
| 10 | 1596 |
| 11 | 1926 |
| 12 | -38592 |
| 13 | -5895 |
| 14 | 234684 |
| 15 | 603621 |
| 16 | -2907414 |
| 17 | -7559802 |
| 18 | 15762420 |
| 19 | 116671738 |
| 20 | -95405184 |
| 21 | -1326191061 |
| 22 | -582470792 |
| 23 | 14912006205 |
| 24 | 21762765822 |
| 25 | -142157118077 |
| 26 | -418666482912 |
| 27 | 1222704927801 |
| 28 | 6161408393758 |
| 29 | -7256289555369 |
| 30 | -80123028681972 |
[1,0,-3,10,-15,84,-161,-174,612,1596,1926,-38592, -5895,234684,603621,-2907414,-7559802,15762420, 116671738,-95405184,-1326191061,-582470792, 14912006205,21762765822,-142157118077, -418666482912,1222704927801,6161408393758, -7256289555369,-80123028681972] |