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A239350 as a simple table
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 144 |
| 3 | 129600 |
| 4 | 5715360000 |
| 5 | 30497732496000000 |
| 6 | 27502882612852046400000000 |
| 7 | 7167813920637790505994548640000000000 |
| 8 | 674376505248717910810215697948155164304000000000000 |
| 9 | 33564007734235791949707248640534383334045138980782017600000000000000 |
[1,4,144,129600,5715360000,30497732496000000, 27502882612852046400000000, 7167813920637790505994548640000000000, 67437650524871791081021569794815516430400000000000\ 0, 33564007734235791949707248640534383334045138980782\ 017600000000000000] |