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A325053 as a simple table

na(n)
03
181
2103680
3447180963840
47014935716261432173527040
51921470539412808834455592518302690305036517376000
681601182941928855942156180258180656419177691149082352022004942698629910149621350400000

[3,81,103680,447180963840,
 7014935716261432173527040,
 1921470539412808834455592518302690305036517376000,
 81601182941928855942156180258180656419177691149082\
 352022004942698629910149621350400000]