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A012641 as a simple table
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -6 |
| 2 | 120 |
| 3 | -6216 |
| 4 | 548544 |
| 5 | -74860544 |
| 6 | 14571230336 |
| 7 | -3827313412352 |
| 8 | 1304171528695808 |
| 9 | -559299942314340352 |
| 10 | 294737591597024591872 |
| 11 | -187195194238509459439616 |
| 12 | 141014910901971840963870720 |
[1,-6,120,-6216,548544,-74860544,14571230336, -3827313412352,1304171528695808, -559299942314340352,294737591597024591872, -187195194238509459439616, 141014910901971840963870720] |