n | a(n) |
---|---|
3 | 0 |
4 | -1 |
5 | 210 |
6 | 638 |
7 | 1348 |
8 | -1 |
9 | 5282 |
10 | 7687 |
11 | 12453 |
12 | -1 |
13 | 24813 |
14 | -1 |
15 | 45338 |
16 | -1 |
17 | 63702 |
18 | 84764 |
19 | 109613 |
20 | -1 |
21 | 162687 |
22 | 155879 |
23 | 224244 |
24 | -1 |
25 | 303049 |
26 | -1 |
27 | 353690 |
28 | -1 |
29 | 522262 |
30 | 541796 |
31 | 651844 |
32 | -1 |
33 | 817053 |
[0,-1,210,638,1348,-1,5282,7687,12453,-1,24813,-1, 45338,-1,63702,84764,109613,-1,162687,155879, 224244,-1,303049,-1,353690,-1,522262,541796, 651844,-1,817053] |