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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -8 |
| 3 | -56 |
| 4 | 64 |
| 5 | 12672 |
| 6 | 309376 |
| 7 | 2917888 |
| 8 | -163782656 |
| 9 | -12716052480 |
| 10 | -495644917760 |
| 11 | -4004259037184 |
| 12 | 1359174582304768 |
| 13 | 153146435763437568 |
| 14 | 9620207941273255936 |
| 15 | 142966118908253962240 |
| 16 | -62984506636368191946752 |
[1,0,-8,-56,64,12672,309376,2917888,-163782656, -12716052480,-495644917760,-4004259037184, 1359174582304768,153146435763437568, 9620207941273255936,142966118908253962240, -62984506636368191946752] |