A163437 - OEIS

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A163437 as a simple table

n	a(n)
1	1
2	7
3	322
4	51472
5	29671936
6	64588152832
7	545697103347712
8	18161310923858378752
9	2399054119350722118025216
10	1262710910458264839283982467072
11	2653270028014955753823799266500411392

[1,7,322,51472,29671936,64588152832, 545697103347712,18161310923858378752, 2399054119350722118025216, 1262710910458264839283982467072, 2653270028014955753823799266500411392]