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| n | a(n) |
|---|---|
| 1 | 31 |
| 2 | 71 |
| 3 | 151 |
| 4 | 191 |
| 5 | 311 |
| 6 | 1031 |
| 7 | 1991 |
| 8 | 3191 |
| 9 | 5351 |
| 10 | 5591 |
| 11 | 10391 |
| 12 | 15791 |
| 13 | 17111 |
| 14 | 27191 |
| 15 | 31391 |
| 16 | 35591 |
| 17 | 42311 |
| 18 | 50951 |
| 19 | 70391 |
| 20 | 93551 |
| 21 | 107159 |
| 22 | 117911 |
| 23 | 119831 |
| 24 | 126551 |
| 25 | 166871 |
| 26 | 180311 |
| 27 | 191831 |
| 28 | 216191 |
| 29 | 255191 |
| 30 | 259871 |
| 31 | 327071 |
| 32 | 366791 |
| 33 | 435431 |
| 34 | 465911 |
| 35 | 514751 |
| 36 | 576551 |
| 37 | 599231 |
| 38 | 631991 |
[31,71,151,191,311,1031,1991,3191,5351,5591,10391, 15791,17111,27191,31391,35591,42311,50951,70391, 93551,107159,117911,119831,126551,166871,180311, 191831,216191,255191,259871,327071,366791,435431, 465911,514751,576551,599231,631991] |