n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | -1 |
3 | -12 |
4 | 42 |
5 | 436 |
6 | -4170 |
7 | -32704 |
8 | 751016 |
9 | 3283072 |
10 | -209162880 |
11 | 86913024 |
12 | 81648502848 |
13 | -575015877024 |
14 | -41409311392176 |
15 | 689874309603456 |
16 | 25412078270229120 |
17 | -812967446932685568 |
18 | -17148064731893670528 |
[0,2,-1,-12,42,436,-4170,-32704,751016,3283072, -209162880,86913024,81648502848,-575015877024, -41409311392176,689874309603456,25412078270229120, -812967446932685568,-17148064731893670528] |