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| n | a(n) |
|---|---|
| 55 | 1906765806522767212441719098019963758016000000 |
| 56 | 9707171378661360354248751771737997313536000000 |
| 57 | 101439940907011215701899456014662071926451200000 |
| 58 | 829726696136835328433485294068646178065075200000 |
| 59 | 7898017947032824439221398664897536276307929600000 |
[1906765806522767212441719098019963758016000000, 9707171378661360354248751771737997313536000000, 101439940907011215701899456014662071926451200000, 829726696136835328433485294068646178065075200000, 7898017947032824439221398664897536276307929600000] |