n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 38 |
5 | 358 |
6 | 2589 |
7 | 25789 |
8 | 257889 |
9 | 2578899 |
10 | 45578899 |
11 | 45578899 |
12 | 556788899 |
13 | 556788899 |
14 | 25567788899 |
15 | 455577888999 |
16 | 5557788888999 |
17 | 5557788888999 |
18 | 255577888889999 |
19 | 255577888889999 |
20 | 5555778888889999 |
21 | 355557778888889999 |
[1,2,6,38,358,2589,25789,257889,2578899,45578899, 45578899,556788899,556788899,25567788899, 455577888999,5557788888999,5557788888999, 255577888889999,255577888889999,5555778888889999, 355557778888889999] |