n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 4 |
4 | -6 |
5 | 48 |
6 | 0 |
7 | 1440 |
8 | -10080 |
9 | 120960 |
10 | 0 |
11 | 7257600 |
12 | -79833600 |
13 | 958003200 |
14 | 0 |
15 | 348713164800 |
16 | -3923023104000 |
17 | 41845579776000 |
18 | 0 |
19 | 12804747411456000 |
20 | -243290200817664000 |
21 | 9731608032706560000 |
22 | 0 |
23 | 2248001455555215360000 |
24 | -103408066955539906560000 |
[1,0,4,-6,48,0,1440,-10080,120960,0,7257600, -79833600,958003200,0,348713164800,-3923023104000, 41845579776000,0,12804747411456000, -243290200817664000,9731608032706560000,0, 2248001455555215360000,-103408066955539906560000] |