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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 7 |
| 3 | 97 |
| 4 | 1791 |
| 5 | 38241 |
| 6 | 892039 |
| 7 | 22092673 |
| 8 | 571387903 |
| 9 | 15271248769 |
| 10 | 418796912007 |
| 11 | 11725812711009 |
| 12 | 333962374092543 |
| 13 | 9648543623050593 |
| 14 | 282164539499639559 |
| 15 | 8338391167566634497 |
| 16 | 248661515283002490879 |
| 17 | 7474768663941435203073 |
[1,7,97,1791,38241,892039,22092673,571387903, 15271248769,418796912007,11725812711009, 333962374092543,9648543623050593, 282164539499639559,8338391167566634497, 248661515283002490879,7474768663941435203073] |