n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | -1 |
3 | 2 |
4 | -1 |
5 | -1 |
6 | 6 |
7 | -2 |
8 | -1 |
9 | -3 |
10 | 24 |
11 | -6 |
12 | -2 |
13 | -3 |
14 | -13 |
15 | 120 |
16 | -24 |
17 | -6 |
18 | -6 |
19 | -13 |
20 | -71 |
21 | 720 |
22 | -120 |
23 | -24 |
24 | -18 |
25 | -26 |
26 | -71 |
27 | -461 |
28 | 5040 |
29 | -720 |
30 | -120 |
31 | -72 |
32 | -78 |
33 | -142 |
34 | -461 |
35 | -3447 |
36 | 40320 |
37 | -5040 |
38 | -720 |
39 | -360 |
40 | -312 |
41 | -426 |
42 | -922 |
43 | -3447 |
44 | -29093 |
45 | 362880 |
46 | -40320 |
47 | -5040 |
48 | -2160 |
49 | -1560 |
[1,1,-1,2,-1,-1,6,-2,-1,-3,24,-6,-2,-3,-13,120, -24,-6,-6,-13,-71,720,-120,-24,-18,-26,-71,-461, 5040,-720,-120,-72,-78,-142,-461,-3447,40320, -5040,-720,-360,-312,-426,-922,-3447,-29093, 362880,-40320,-5040,-2160,-1560] |