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A152646 as a simple table

na(n)
11
22
36
424
5120
6720
75040
840320
9339840
103087648
1130271392
12324759072
133731733312
1446734640160
15618773953544
168801281435864

[1,2,6,24,120,720,5040,40320,339840,3087648,
 30271392,324759072,3731733312,46734640160,
 618773953544,8801281435864]