A152375 - OEIS

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A152375 as a simple table

n	a(n)
1	1
2	2
3	6
4	24
5	120
6	720
7	5040
8	37056
9	297024
10	2589312
11	24999728
12	269064128
13	3019455096
14	36323535084
15	469163711448
16	6568832555744

[1,2,6,24,120,720,5040,37056,297024,2589312, 24999728,269064128,3019455096,36323535084, 469163711448,6568832555744]