n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | -8 |
3 | 72 |
4 | -768 |
5 | 9072 |
6 | -114240 |
7 | 1502976 |
8 | -20414208 |
9 | 284083968 |
10 | -4029438976 |
11 | 58040074752 |
12 | -846682968064 |
13 | 12483389708288 |
14 | -185725854932992 |
15 | 2784798982701056 |
16 | -42039464045854720 |
17 | 638415031298588672 |
18 | -9746180768647217152 |
19 | 149486708349609050112 |
[1,2,-8,72,-768,9072,-114240,1502976,-20414208, 284083968,-4029438976,58040074752,-846682968064, 12483389708288,-185725854932992,2784798982701056, -42039464045854720,638415031298588672, -9746180768647217152,149486708349609050112] |