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A052584 as a simple table

na(n)
02
12
26
330
4216
52040
623760
7327600
85201280
993260160
101861574400
1140914720000
12981474278400
1325512104217600
14714251739801600
1521426244519680000
16685618901839872000
1723310686975127552000
18839178328730886144000
1931888654846673264640000
201275543760964922408960000

[2,2,6,30,216,2040,23760,327600,5201280,93260160,
 1861574400,40914720000,981474278400,
 25512104217600,714251739801600,21426244519680000,
 685618901839872000,23310686975127552000,
 839178328730886144000,31888654846673264640000,
 1275543760964922408960000]