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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 | 942237774900992 |
| 10 | 43342937645445632 |
| 11 | 1993775131690499072 |
| 12 | 91713656057762957312 |
| 13 | 4218828178657096036352 |
| 14 | 194066096218226417672192 |
| 15 | 8927040426038415212920832 |
[1,47,2162,99452,4574792,210440432,9680259872, 445291954112,20483429889152,942237774900992, 43342937645445632,1993775131690499072, 91713656057762957312,4218828178657096036352, 194066096218226417672192, 8927040426038415212920832] |