n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 45 |
4 | -1 |
5 | 15 |
6 | 36 |
7 | 21 |
8 | 120 |
9 | -1 |
10 | 210 |
11 | 66 |
12 | 36 |
13 | 78 |
14 | 210 |
15 | 45 |
16 | -1 |
17 | 1326 |
18 | 378 |
19 | 190 |
20 | 120 |
21 | 210 |
22 | 66 |
23 | 1035 |
24 | 4560 |
25 | -1 |
26 | 78 |
27 | 1485 |
28 | 1540 |
29 | 435 |
30 | 300 |
31 | 465 |
32 | 902496 |
33 | 1485 |
34 | 3570 |
35 | 105 |
36 | -1 |
37 | 17205 |
38 | 4560 |
39 | 2145 |
40 | 120 |
41 | 861 |
42 | 630 |
43 | 903 |
44 | 157080 |
45 | 4095 |
46 | 276 |
47 | 9870 |
48 | 41328 |
49 | -1 |
50 | 300 |
51 | 153 |
52 | 780 |
53 | 5565 |
54 | 1185030 |
[1,6,45,-1,15,36,21,120,-1,210,66,36,78,210,45,-1, 1326,378,190,120,210,66,1035,4560,-1,78,1485,1540, 435,300,465,902496,1485,3570,105,-1,17205,4560, 2145,120,861,630,903,157080,4095,276,9870,41328, -1,300,153,780,5565,1185030] |