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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 7 |
| 3 | 73 |
| 4 | 1039 |
| 5 | 18961 |
| 6 | 423703 |
| 7 | 11208793 |
| 8 | 342414367 |
| 9 | 11855713825 |
| 10 | 458600785447 |
| 11 | 19594307026537 |
| 12 | 916242295851055 |
| 13 | 46533732766792753 |
| 14 | 2550471781317027127 |
| 15 | 150035539128333384313 |
| 16 | 9428390893356604340287 |
| 17 | 630318228814408172573761 |
[1,7,73,1039,18961,423703,11208793,342414367, 11855713825,458600785447,19594307026537, 916242295851055,46533732766792753, 2550471781317027127,150035539128333384313, 9428390893356604340287,630318228814408172573761] |