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A051418 as a simple table

na(n)
11
24
336
4144
53600
63600
7176400
8705600
96350400
106350400
11768398400
12768398400
13129859329600
14129859329600
15129859329600
16519437318400
17150117385017600
18150117385017600
1954192375991353600
2054192375991353600
2154192375991353600
2254192375991353600

[1,4,36,144,3600,3600,176400,705600,6350400,
 6350400,768398400,768398400,129859329600,
 129859329600,129859329600,519437318400,
 150117385017600,150117385017600,54192375991353600,
 54192375991353600,54192375991353600,
 54192375991353600]