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A152364 as a simple table

na(n)
11
22
36
424
5120
6720
74416
831416
9244848
102051440
1119937544
12199909750
132216470260
1425839182598
15333498017906
164555645851472

[1,2,6,24,120,720,4416,31416,244848,2051440,
 19937544,199909750,2216470260,25839182598,
 333498017906,4555645851472]