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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 12 |
| 3 | 123 |
| 4 | 1004 |
| 5 | 10005 |
| 6 | 100026 |
| 7 | 1000027 |
| 8 | 10000008 |
| 9 | 100000089 |
| 10 | 10000000010 |
| 11 | 100000000111 |
| 12 | 1000000000212 |
| 13 | 10000000000913 |
| 14 | 100000000000614 |
| 15 | 1000000000000215 |
| 16 | 10000000000000016 |
| 17 | 100000000000000517 |
| 18 | 1000000000000000818 |
| 19 | 10000000000000001719 |
| 20 | 100000000000000000020 |
[1,12,123,1004,10005,100026,1000027,10000008, 100000089,10000000010,100000000111,1000000000212, 10000000000913,100000000000614,1000000000000215, 10000000000000016,100000000000000517, 1000000000000000818,10000000000000001719, 100000000000000000020] |