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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 9 |
| 4 | 27 |
| 5 | 37 |
| 6 | 101 |
| 7 | 303 |
| 8 | 909 |
| 9 | 2439 |
| 10 | 10101 |
| 11 | 10989 |
| 12 | 12987 |
| 13 | 15873 |
| 14 | 25641 |
| 15 | 27027 |
| 16 | 30303 |
| 17 | 37037 |
| 18 | 47619 |
| 19 | 76923 |
| 20 | 90909 |
| 21 | 1010101 |
| 22 | 1369863 |
| 23 | 3030303 |
| 24 | 9090909 |
| 25 | 12345679 |
| 26 | 27027027 |
| 27 | 37037037 |
| 28 | 101010101 |
| 29 | 243902439 |
| 30 | 303030303 |
| 31 | 909090909 |
| 32 | 10101010101 |
| 33 | 10989010989 |
| 34 | 12987012987 |
| 35 | 15873015873 |
[1,3,9,27,37,101,303,909,2439,10101,10989,12987, 15873,25641,27027,30303,37037,47619,76923,90909, 1010101,1369863,3030303,9090909,12345679,27027027, 37037037,101010101,243902439,303030303,909090909, 10101010101,10989010989,12987012987,15873015873] |