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| n | a(n) |
|---|---|
| 11 | 6466460 |
| 12 | 678405090 |
| 13 | 34225196720 |
| 14 | 1137369687454 |
| 15 | 28442316247080 |
| 16 | 576218752277476 |
| 17 | 9908748651241088 |
| 18 | 149314477245194262 |
| 19 | 2017523504473479992 |
| 20 | 24868664942648145372 |
| 21 | 283389619978690157408 |
| 22 | 3017066587822315930220 |
| 23 | 30265092793614787511376 |
| 24 | 288055728071446557904968 |
| 25 | 2616366012933033221518720 |
[6466460,678405090,34225196720,1137369687454, 28442316247080,576218752277476,9908748651241088, 149314477245194262,2017523504473479992, 24868664942648145372,283389619978690157408, 3017066587822315930220,30265092793614787511376, 288055728071446557904968, 2616366012933033221518720] |