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A293526 as a simple table

na(n)
01
10
20
36
40
50
6360
75040
80
960480
103628800
1139916800
1219958400
133113510400
14130767436800
151318571654400
163487131648000
17355687428096000
1812813639597158400
19126713646259200000
201013709170073600000
2185161707377883136000
222819368492175499264000

[1,0,0,6,0,0,360,5040,0,60480,3628800,39916800,
 19958400,3113510400,130767436800,1318571654400,
 3487131648000,355687428096000,12813639597158400,
 126713646259200000,1013709170073600000,
 85161707377883136000,2819368492175499264000]