n | a(n) |
---|---|
2 | 1 |
3 | -1 |
4 | 0 |
5 | 1 |
6 | 0 |
7 | -3 |
8 | -1 |
9 | 14 |
10 | 20 |
11 | -77 |
12 | -308 |
13 | 147 |
14 | 3965 |
15 | 12527 |
16 | -26255 |
17 | -446923 |
18 | -1127033 |
19 | 9020388 |
20 | 71170748 |
21 | 57286010 |
22 | -2168151928 |
23 | -17700260071 |
24 | -11899834419 |
25 | 993097077555 |
26 | 7077421523510 |
27 | -12873010724109 |
[1,-1,0,1,0,-3,-1,14,20,-77,-308,147,3965,12527, -26255,-446923,-1127033,9020388,71170748,57286010, -2168151928,-17700260071,-11899834419, 993097077555,7077421523510,-12873010724109] |