n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 2 |
3 | -3 |
4 | 4 |
5 | -20 |
6 | 38 |
7 | 441 |
8 | -4776 |
9 | 34056 |
10 | -368838 |
11 | 5189085 |
12 | -61808100 |
13 | 666424980 |
14 | -8929309170 |
15 | 147346759665 |
16 | -2283822093840 |
17 | 33140217608400 |
18 | -562702300383630 |
19 | 11332944235915965 |
20 | -219113911766658060 |
[0,0,2,-3,4,-20,38,441,-4776,34056,-368838, 5189085,-61808100,666424980,-8929309170, 147346759665,-2283822093840,33140217608400, -562702300383630,11332944235915965, -219113911766658060] |