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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 47 |
| 2 | 2162 |
| 3 | 99452 |
| 4 | 4574792 |
| 5 | 210440432 |
| 6 | 9680259872 |
| 7 | 445291954112 |
| 8 | 20483429889152 |
| 9 | 942237774899911 |
| 10 | 43342937645346180 |
| 11 | 1993775131683637965 |
| 12 | 91713656057342175900 |
| 13 | 4218828178632902248860 |
| 14 | 194066096216890962690720 |
[1,47,2162,99452,4574792,210440432,9680259872, 445291954112,20483429889152,942237774899911, 43342937645346180,1993775131683637965, 91713656057342175900,4218828178632902248860, 194066096216890962690720] |