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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 6 |
| 3 | 13 |
| 4 | 15 |
| 5 | 31 |
| 6 | 32 |
| 7 | 34 |
| 8 | 75 |
| 9 | 77 |
| 10 | 445 |
| 11 | 2701 |
| 12 | 15929 |
| 13 | 40079 |
| 14 | 40156 |
| 15 | 251720 |
| 16 | 251766 |
| 17 | 251769 |
| 18 | 251787 |
| 19 | 10553437 |
| 20 | 10553577 |
| 21 | 10553645 |
| 22 | 10553815 |
| 23 | 179992919 |
| 24 | 179993161 |
| 25 | 179993169 |
| 26 | 3140421756 |
| 27 | 3140421774 |
| 28 | 3140421782 |
| 29 | 55762149085 |
| 30 | 55762149089 |
| 31 | 55762149101 |
[5,6,13,15,31,32,34,75,77,445,2701,15929,40079, 40156,251720,251766,251769,251787,10553437, 10553577,10553645,10553815,179992919,179993161, 179993169,3140421756,3140421774,3140421782, 55762149085,55762149089,55762149101] |