n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | -1 |
3 | 1 |
4 | 3 |
5 | -4 |
6 | 1 |
7 | -15 |
8 | 25 |
9 | -4 |
10 | -7 |
11 | 1 |
12 | 105 |
13 | -210 |
14 | 70 |
15 | 60 |
16 | -15 |
17 | -11 |
18 | 1 |
19 | -945 |
20 | 2205 |
21 | -1120 |
22 | -630 |
23 | 70 |
24 | 350 |
25 | 126 |
26 | -15 |
27 | -26 |
28 | -16 |
29 | 1 |
30 | 10395 |
31 | -27720 |
32 | 18900 |
33 | 7875 |
34 | -2800 |
35 | -6930 |
36 | -1638 |
37 | 560 |
38 | 455 |
39 | 784 |
40 | 238 |
41 | -56 |
42 | -42 |
43 | -22 |
44 | 1 |
45 | -135135 |
46 | 405405 |
47 | -346500 |
48 | -114345 |
49 | 84700 |
[1,1,-1,1,3,-4,1,-15,25,-4,-7,1,105,-210,70,60, -15,-11,1,-945,2205,-1120,-630,70,350,126,-15,-26, -16,1,10395,-27720,18900,7875,-2800,-6930,-1638, 560,455,784,238,-56,-42,-22,1,-135135,405405, -346500,-114345,84700] |