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| n | a(n) |
|---|---|
| 1 | 68 |
| 2 | 86 |
| 3 | 168 |
| 4 | 186 |
| 5 | 268 |
| 6 | 286 |
| 7 | 368 |
| 8 | 386 |
| 9 | 468 |
| 10 | 486 |
| 11 | 568 |
| 12 | 586 |
| 13 | 668 |
| 14 | 689 |
| 15 | 768 |
| 16 | 786 |
| 17 | 869 |
| 18 | 886 |
| 19 | 968 |
| 20 | 986 |
| 21 | 1068 |
| 22 | 1086 |
| 23 | 1168 |
| 24 | 1186 |
| 25 | 1268 |
| 26 | 1286 |
| 27 | 1368 |
| 28 | 1386 |
| 29 | 1468 |
| 30 | 1486 |
| 31 | 1568 |
| 32 | 1586 |
| 33 | 1668 |
| 34 | 1689 |
| 35 | 1768 |
| 36 | 1786 |
| 37 | 1869 |
| 38 | 1886 |
| 39 | 1968 |
| 40 | 1986 |
| 41 | 2068 |
[68,86,168,186,268,286,368,386,468,486,568,586, 668,689,768,786,869,886,968,986,1068,1086,1168, 1186,1268,1286,1368,1386,1468,1486,1568,1586,1668, 1689,1768,1786,1869,1886,1968,1986,2068] |