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A011785 as a simple table

na(n)
11
2168
35616
443008
5372000
6943488
75630688
811010048
936846576
1062496000
11212427600
12241532928
13810534816
14945955584
152089152000
162818572288
176950204928
186190224768
1916934047920
2015998976000
2131621943808
2235687836800

[1,168,5616,43008,372000,943488,5630688,11010048,
 36846576,62496000,212427600,241532928,810534816,
 945955584,2089152000,2818572288,6950204928,
 6190224768,16934047920,15998976000,31621943808,
 35687836800]