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A052554 as a simple table

na(n)
01
10
22
36
448
5360
63600
740320
8524160
97620480
10123379200
112195424000
1242631142400
13896690995200
1420312541849600
15492993236736000
1612762901831680000
17351063491530752000
1810224590808047616000

[1,0,2,6,48,360,3600,40320,524160,7620480,
 123379200,2195424000,42631142400,896690995200,
 20312541849600,492993236736000,12762901831680000,
 351063491530752000,10224590808047616000]