n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | -2 |
3 | -12 |
4 | 126 |
5 | -84 |
6 | -10532 |
7 | 72584 |
8 | 1398454 |
9 | -23934644 |
10 | -279791836 |
11 | 10005551128 |
12 | 74538179116 |
13 | -5628788533000 |
14 | -20339727800264 |
15 | 4187789575589776 |
16 | -1855072071151834 |
17 | -4010464443848609780 |
[1,2,-2,-12,126,-84,-10532,72584,1398454, -23934644,-279791836,10005551128,74538179116, -5628788533000,-20339727800264,4187789575589776, -1855072071151834,-4010464443848609780] |