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A303486 as a simple table

na(n)
01
11
210
3162
43640
5104720
63674160
7152152000
87264216960
9392841187200
1023734494784000
111584471003315200
12115825295634048000
139201578813819392000
14789383453851632640000
1572728093032166347776000
167162140885524461957120000
17750766815289210771251200000

[1,1,10,162,3640,104720,3674160,152152000,
 7264216960,392841187200,23734494784000,
 1584471003315200,115825295634048000,
 9201578813819392000,789383453851632640000,
 72728093032166347776000,7162140885524461957120000,
 750766815289210771251200000]