n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 2 |
3 | 6 |
4 | 4 |
5 | 20 |
6 | 6 |
7 | 42 |
8 | 8 |
9 | 864 |
10 | 20 |
11 | 42086 |
12 | 420 |
13 | 208 |
14 | 42 |
15 | 420 |
16 | 64 |
17 | 8642086 |
18 | 864 |
19 | 642086 |
20 | 20 |
21 | 42 |
22 | 42086 |
23 | 6420864 |
24 | 864 |
25 | -1 |
26 | 208 |
27 | 864 |
28 | 420 |
29 | 8642 |
30 | 420 |
31 | 86420864208642 |
32 | 64 |
33 | 420864208642086 |
34 | 8642086 |
35 | 420 |
36 | 864 |
37 | 86420864208642 |
38 | 642086 |
39 | 86420864208642086420864208642 |
40 | -1 |
41 | 642086420864208642 |
42 | 42 |
43 | 86 |
44 | 2086420864 |
45 | 6420864208642086420 |
46 | 6420864 |
47 | 2086420864208642086 |
48 | 864 |
49 | 208642 |
50 | -1 |
51 | 864208642086420864208642086420864 |
[0,2,2,6,4,20,6,42,8,864,20,42086,420,208,42,420, 64,8642086,864,642086,20,42,42086,6420864,864,-1, 208,864,420,8642,420,86420864208642,64, 420864208642086,8642086,420,864,86420864208642, 642086,86420864208642086420864208642,-1, 642086420864208642,42,86,2086420864, 6420864208642086420,6420864,2086420864208642086, 864,208642,-1,864208642086420864208642086420864] |