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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -30 |
| 3 | -540 |
| 4 | -867660 |
| 5 | -31107300 |
| 6 | -33668157900 |
| 7 | -1795572812400 |
| 8 | -1477793386682970 |
| 9 | -103845834995498100 |
| 10 | -69550699526934273180 |
| 11 | -6017200267937951322660 |
| 12 | -3426636160378174348594500 |
| 13 | -349303370036461528632524580 |
| 14 | -174458882971934188146144343320 |
| 15 | -20314204536496741742949242177040 |
[1,0,-30,-540,-867660,-31107300,-33668157900, -1795572812400,-1477793386682970, -103845834995498100,-69550699526934273180, -6017200267937951322660, -3426636160378174348594500, -349303370036461528632524580, -174458882971934188146144343320, -20314204536496741742949242177040] |