n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | -1 |
3 | 6 |
4 | -6 |
5 | 1 |
6 | 24 |
7 | -36 |
8 | 12 |
9 | -1 |
10 | 120 |
11 | -240 |
12 | 120 |
13 | -20 |
14 | 1 |
15 | 720 |
16 | -1800 |
17 | 1200 |
18 | -300 |
19 | 30 |
20 | -1 |
21 | 5040 |
22 | -15120 |
23 | 12600 |
24 | -4200 |
25 | 630 |
26 | -42 |
27 | 1 |
28 | 40320 |
29 | -141120 |
30 | 141120 |
31 | -58800 |
32 | 11760 |
33 | -1176 |
34 | 56 |
35 | -1 |
36 | 362880 |
37 | -1451520 |
38 | 1693440 |
39 | -846720 |
40 | 211680 |
41 | -28224 |
42 | 2016 |
[1,2,-1,6,-6,1,24,-36,12,-1,120,-240,120,-20,1, 720,-1800,1200,-300,30,-1,5040,-15120,12600,-4200, 630,-42,1,40320,-141120,141120,-58800,11760,-1176, 56,-1,362880,-1451520,1693440,-846720,211680, -28224,2016] |