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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -2 |
| 2 | 296 |
| 3 | -327984 |
| 4 | 1363872384 |
| 5 | -15198541159680 |
| 6 | 372495898187043840 |
| 7 | -17616182020373076940800 |
| 8 | 1464370216956293433318604800 |
| 9 | -199499758936277018742988067635200 |
| 10 | 42181903584776412718275835664105472000 |
| 11 | -13251216132203374725100642797337549799424000 |
[1,-2,296,-327984,1363872384,-15198541159680, 372495898187043840,-17616182020373076940800, 1464370216956293433318604800, -199499758936277018742988067635200, 42181903584776412718275835664105472000, -13251216132203374725100642797337549799424000] |