n | a(n) |
---|---|
0 | 0 |
1 | 81 |
2 | 9801 |
3 | 998001 |
4 | 99980001 |
5 | 9999800001 |
6 | 999998000001 |
7 | 99999980000001 |
8 | 9999999800000001 |
9 | 999999998000000001 |
10 | 99999999980000000001 |
11 | 9999999999800000000001 |
12 | 999999999998000000000001 |
13 | 99999999999980000000000001 |
14 | 9999999999999800000000000001 |
15 | 999999999999998000000000000001 |
[0,81,9801,998001,99980001,9999800001, 999998000001,99999980000001,9999999800000001, 999999998000000001,99999999980000000001, 9999999999800000000001,999999999998000000000001, 99999999999980000000000001, 9999999999999800000000000001, 999999999999998000000000000001] |