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| n | a(n) |
|---|---|
| 1 | 2040 |
| 2 | 56586600 |
| 3 | 2604964362000 |
| 4 | 149144498504001000 |
| 5 | 9647422924194982967040 |
| 6 | 674741194624071430134879600 |
| 7 | 49825573548689359631837113344000 |
| 8 | 3829361053685468612006211542840385000 |
[2040,56586600,2604964362000,149144498504001000, 9647422924194982967040, 674741194624071430134879600, 49825573548689359631837113344000, 3829361053685468612006211542840385000] |