A132568 - OEIS

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A132568 as a simple table

n	a(n)
1	2
2	22
3	724
4	5468899
5	41219812915806
6	9830404123951216001398242604
7	175501018567713056443099287241463851479147427159806448659

[2,22,724,5468899,41219812915806, 9830404123951216001398242604, 17550101856771305644309928724146385147914742715980\ 6448659]