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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 19 |
| 3 | 91 |
| 4 | 127 |
| 5 | 721 |
| 6 | 919 |
| 7 | 999 |
| 8 | 1385 |
| 9 | 1727 |
| 10 | 3159 |
| 11 | 4376 |
| 12 | 5409 |
| 13 | 5831 |
| 14 | 6734 |
| 15 | 7271 |
| 16 | 9045 |
| 17 | 9513 |
| 18 | 10647 |
| 19 | 11824 |
| 20 | 12691 |
| 21 | 14491 |
| 22 | 15967 |
| 23 | 16939 |
| 24 | 19441 |
| 25 | 19621 |
| 26 | 25352 |
| 27 | 26973 |
| 28 | 27872 |
| 29 | 28737 |
| 30 | 29783 |
| 31 | 31213 |
| 32 | 35163 |
| 33 | 35929 |
| 34 | 36153 |
| 35 | 37962 |
| 36 | 37973 |
| 37 | 38656 |
| 38 | 38792 |
| 39 | 39636 |
[7,19,91,127,721,919,999,1385,1727,3159,4376,5409, 5831,6734,7271,9045,9513,10647,11824,12691,14491, 15967,16939,19441,19621,25352,26973,27872,28737, 29783,31213,35163,35929,36153,37962,37973,38656, 38792,39636] |