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A013311 as a simple table

na(n)
11
22
32
412
580
6512
74832
853872
9654320
109264032
11147228512
122559080832
1348910122560
141017566317952
1522822627908992
16550081215323392
1714178080204748800
18388900281882678272
1911314716065658294272

[1,2,2,12,80,512,4832,53872,654320,9264032,
 147228512,2559080832,48910122560,1017566317952,
 22822627908992,550081215323392,14178080204748800,
 388900281882678272,11314716065658294272]