n | a(n) |
---|---|
1 | 1 |
2 | -1 |
3 | 3 |
4 | -1 |
5 | -15 |
6 | 10 |
7 | -1 |
8 | 105 |
9 | -105 |
10 | 10 |
11 | 15 |
12 | -1 |
13 | -945 |
14 | 1260 |
15 | -280 |
16 | -210 |
17 | 35 |
18 | 21 |
19 | -1 |
20 | 10395 |
21 | -17325 |
22 | 6300 |
23 | 3150 |
24 | -280 |
25 | -1260 |
26 | -378 |
27 | 35 |
28 | 56 |
29 | 28 |
30 | -1 |
31 | -135135 |
32 | 270270 |
33 | -138600 |
34 | -51975 |
35 | 15400 |
36 | 34650 |
37 | 6930 |
38 | -2100 |
39 | -1575 |
40 | -2520 |
41 | -630 |
42 | 126 |
43 | 84 |
44 | 36 |
45 | -1 |
[1,-1,3,-1,-15,10,-1,105,-105,10,15,-1,-945,1260, -280,-210,35,21,-1,10395,-17325,6300,3150,-280, -1260,-378,35,56,28,-1,-135135,270270,-138600, -51975,15400,34650,6930,-2100,-1575,-2520,-630, 126,84,36,-1] |