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A172666 as a simple table

na(n)
10
20
30
4369600
58432855707512236000
62333327772435239191435579651896000
77912042661932746320895028318655823357822209601009
8288661272140059402021783839980598829830361488723258925444306851840

[0,0,0,369600,8432855707512236000,
 2333327772435239191435579651896000,
 7912042661932746320895028318655823357822209601009,
 28866127214005940202178383998059882983036148872325\
 8925444306851840]