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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 0 |
| 3 | -3 |
| 4 | 28 |
| 5 | -215 |
| 6 | -174 |
| 7 | 90223 |
| 8 | -3840472 |
| 9 | 103719537 |
| 10 | 429704110 |
| 11 | -357346077869 |
| 12 | 35100093531900 |
| 13 | -2005608652057595 |
| 14 | -24108041118593418 |
| 15 | 27881407632242902515 |
| 16 | -4876442148527153942384 |
| 17 | 474102062424164433715937 |
| 18 | 12637408141631813073125094 |
| 19 | -18867461801192524662360616421 |
[0,1,0,-3,28,-215,-174,90223,-3840472,103719537, 429704110,-357346077869,35100093531900, -2005608652057595,-24108041118593418, 27881407632242902515,-4876442148527153942384, 474102062424164433715937, 12637408141631813073125094, -18867461801192524662360616421] |