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A000767 as a simple table

na(n)
216
3192
42016
520160
6197940
71930944
818805488
9183156320
101785303660
1117421627280
12170214459928
131665089608504
1416307758577692
15159896665015064

[16,192,2016,20160,197940,1930944,18805488,
 183156320,1785303660,17421627280,170214459928,
 1665089608504,16307758577692,159896665015064]