n | a(n) |
---|---|
1 | -1 |
2 | -1 |
3 | 1000 |
4 | -1 |
5 | 1000000 |
6 | 2000 |
7 | 3000 |
8 | 5000 |
9 | 4000 |
10 | 14000 |
11 | 21000 |
12 | 16000 |
13 | 17000 |
14 | 25000 |
15 | 24000 |
16 | 35000 |
17 | 34000 |
18 | 44000 |
19 | 54000 |
[-1,-1,1000,-1,1000000,2000,3000,5000,4000,14000, 21000,16000,17000,25000,24000,35000,34000,44000, 54000] |