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A090604 as a simple table

na(n)
11
22
315
4944
5725500
69319882896
72537598028922726
817768840869582166129408
93754397843576564028373337684409
1027480138271604938576005130925123233245100

[1,2,15,944,725500,9319882896,2537598028922726,
 17768840869582166129408,
 3754397843576564028373337684409,
 27480138271604938576005130925123233245100]