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| n | a(n) |
|---|---|
| 1 | 10234567889 |
| 2 | 100223456789 |
| 3 | 100234566789 |
| 4 | 100234567889 |
| 5 | 101234556789 |
| 6 | 101234567789 |
| 7 | 102234456789 |
| 8 | 102234566789 |
| 9 | 102334556789 |
| 10 | 102334567899 |
| 11 | 102344456789 |
| 12 | 102344567889 |
| 13 | 102345567789 |
| 14 | 102345666789 |
| 15 | 102345677789 |
| 16 | 102345678899 |
| 17 | 1000223456789 |
| 18 | 1000234456789 |
| 19 | 1000234566789 |
[10234567889,100223456789,100234566789, 100234567889,101234556789,101234567789, 102234456789,102234566789,102334556789, 102334567899,102344456789,102344567889, 102345567789,102345666789,102345677789, 102345678899,1000223456789,1000234456789, 1000234566789] |