A059085 - OEIS

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A059085 as a simple table

n	a(n)
0	2
1	4
2	12
3	216
4	64152
5	4294320192
6	18446744009290559040
7	340282366920938463075992982635439125760
8	115792089237316195423570985008687907843742078391854287068422946583140399879680

[2,4,12,216,64152,4294320192,18446744009290559040, 340282366920938463075992982635439125760, 11579208923731619542357098500868790784374207839185\ 4287068422946583140399879680]