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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 66 |
| 3 | 512 |
| 4 | -4548 |
| 5 | -95232 |
| 6 | 235896 |
| 7 | 19184640 |
| 8 | 71390982 |
| 9 | -3574929408 |
| 10 | -38686277880 |
| 11 | 549355393536 |
| 12 | 12560156358776 |
| 13 | -44726582455296 |
| 14 | -3304393480144896 |
| 15 | -11697847949288448 |
| 16 | 730893806097007116 |
| 17 | 7947401735635359744 |
| 18 | -128019618062747473590 |
| 19 | -2899743155552604891648 |
[1,0,66,512,-4548,-95232,235896,19184640,71390982, -3574929408,-38686277880,549355393536, 12560156358776,-44726582455296,-3304393480144896, -11697847949288448,730893806097007116, 7947401735635359744,-128019618062747473590, -2899743155552604891648] |