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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 6 |
| 3 | 9 |
| 4 | 10 |
| 5 | 21 |
| 6 | 34 |
| 7 | 65 |
| 8 | 87 |
| 9 | 123 |
| 10 | 321 |
| 11 | 543 |
| 12 | 789 |
| 13 | 901 |
| 14 | 1234 |
| 15 | 4321 |
| 16 | 8765 |
| 17 | 34567 |
| 18 | 56789 |
| 19 | 98765 |
| 20 | 654321 |
| 21 | 876543 |
| 22 | 901234 |
| 23 | 1234567 |
| 24 | 7654321 |
| 25 | 7890123 |
| 26 | 10987654 |
| 27 | 21098765 |
| 28 | 567890123 |
| 29 | 12345678901 |
| 30 | 54321098765 |
| 31 | 76543210987 |
| 32 | 87654321098 |
[4,6,9,10,21,34,65,87,123,321,543,789,901,1234, 4321,8765,34567,56789,98765,654321,876543,901234, 1234567,7654321,7890123,10987654,21098765, 567890123,12345678901,54321098765,76543210987, 87654321098] |