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| n | a(n) |
|---|---|
| 1 | 111920 |
| 2 | 755265546000 |
| 3 | 8432855707512236000 |
| 4 | 117188101836293753504038800 |
| 5 | 1840612120873072393197860408401920 |
| 6 | 31265195228897742672250371317378119778400 |
[111920,755265546000,8432855707512236000, 117188101836293753504038800, 1840612120873072393197860408401920, 31265195228897742672250371317378119778400] |