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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1152 |
| 2 | 5542680 |
| 3 | 31473008640 |
| 4 | 190818980609400 |
| 5 | 1198265754978353152 |
| 6 | 7691041400616850556280 |
| 7 | 50107639155283424528302080 |
| 8 | 330014847932376708502470210680 |
| 9 | 2191489080600524699617120065945600 |
| 10 | 14647137653300940580784413641872332680 |
[1,1152,5542680,31473008640,190818980609400, 1198265754978353152,7691041400616850556280, 50107639155283424528302080, 330014847932376708502470210680, 2191489080600524699617120065945600, 14647137653300940580784413641872332680] |