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| n | a(n) |
|---|---|
| 1 | 19 |
| 2 | 61 |
| 3 | 109 |
| 4 | 199 |
| 5 | 601 |
| 6 | 661 |
| 7 | 1019 |
| 8 | 1061 |
| 9 | 1091 |
| 10 | 1109 |
| 11 | 1181 |
| 12 | 1601 |
| 13 | 1609 |
| 14 | 1669 |
| 15 | 1699 |
| 16 | 1811 |
| 17 | 1901 |
| 18 | 1999 |
| 19 | 6011 |
| 20 | 6091 |
| 21 | 6101 |
| 22 | 6199 |
| 23 | 6619 |
| 24 | 6661 |
| 25 | 6689 |
| 26 | 6691 |
| 27 | 6899 |
| 28 | 6991 |
| 29 | 10061 |
| 30 | 10069 |
| 31 | 10091 |
| 32 | 10691 |
| 33 | 10861 |
| 34 | 10909 |
| 35 | 11069 |
| 36 | 11681 |
| 37 | 11909 |
| 38 | 16001 |
| 39 | 16619 |
| 40 | 16661 |
[19,61,109,199,601,661,1019,1061,1091,1109,1181, 1601,1609,1669,1699,1811,1901,1999,6011,6091,6101, 6199,6619,6661,6689,6691,6899,6991,10061,10069, 10091,10691,10861,10909,11069,11681,11909,16001, 16619,16661] |