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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 64 |
| 3 | 10305 |
| 4 | 12029640 |
| 5 | 115066382913 |
| 6 | 9913814758253424 |
| 7 | 7908201732771623795865 |
| 8 | 59973177127583169531861733624 |
| 9 | 4374964523946648320195747609012311225 |
| 10 | 3101392210136336400751621092299022481429113152 |
[1,64,10305,12029640,115066382913, 9913814758253424,7908201732771623795865, 59973177127583169531861733624, 4374964523946648320195747609012311225, 3101392210136336400751621092299022481429113152] |