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| n | a(n) |
|---|---|
| 0 | 3 |
| 1 | 47 |
| 2 | 575 |
| 3 | 6911 |
| 4 | 82943 |
| 5 | 995327 |
| 6 | 11943935 |
| 7 | 143327231 |
| 8 | 1719926783 |
| 9 | 20639121407 |
| 10 | 247669456895 |
| 11 | 2972033482751 |
| 12 | 35664401793023 |
| 13 | 427972821516287 |
| 14 | 5135673858195455 |
| 15 | 61628086298345471 |
| 16 | 739537035580145663 |
| 17 | 8874444426961747967 |
[3,47,575,6911,82943,995327,11943935,143327231, 1719926783,20639121407,247669456895,2972033482751, 35664401793023,427972821516287,5135673858195455, 61628086298345471,739537035580145663, 8874444426961747967] |