n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 6 |
5 | 9 |
6 | 18 |
7 | 36 |
8 | 72 |
9 | 99 |
10 | 198 |
11 | 396 |
12 | 792 |
13 | 999 |
14 | 1998 |
15 | 3996 |
16 | 7992 |
17 | 9999 |
18 | 10989 |
19 | 19998 |
20 | 21978 |
21 | 39996 |
22 | 43956 |
23 | 76923 |
24 | 99999 |
25 | 199998 |
[1,2,3,6,9,18,36,72,99,198,396,792,999,1998,3996, 7992,9999,10989,19998,21978,39996,43956,76923, 99999,199998] |