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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 30 |
| 2 | 9845550 |
| 3 | 171634285407048750 |
| 4 | 193419995622362136809061156168750 |
| 5 | 14272693289804307141953423466197932293533748208968750 |
[1,30,9845550,171634285407048750, 193419995622362136809061156168750, 14272693289804307141953423466197932293533748208968\ 750] |