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A011786 as a simple table

na(n)
11
220160
312130560
4660602880
529016000000
6244552089600
74635182361600
821646635171840
9174060277297920
10584962560000000
114139330225184000
128013482872012800
1350858076935877120
1493445276409856000
15351980328960000000
16709316941310853120
172851903720876769280

[1,20160,12130560,660602880,29016000000,
 244552089600,4635182361600,21646635171840,
 174060277297920,584962560000000,4139330225184000,
 8013482872012800,50858076935877120,
 93445276409856000,351980328960000000,
 709316941310853120,2851903720876769280]