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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 7 |
| 3 | 29 |
| 4 | 239 |
| 5 | 35642 |
| 6 | 4939700112 |
| 7 | 48108453420633293272 |
| 8 | 444429875521548685791697227054499321900 |
| 9 | 25562938514216590071082104331351977875333056562865491878765431482309855946304 |
[2,7,29,239,35642,4939700112,48108453420633293272, 444429875521548685791697227054499321900, 25562938514216590071082104331351977875333056562865\ 491878765431482309855946304] |