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A272248 as a simple table

na(n)
00
12
267584
37924375800
42876035930521600
52693451205324687500000
65648896640332217707816550400
723819277009290664033936067933468800
8185754160490281505676324140907107450880000
92507604631016507710974687639612411760216253760000

[0,2,67584,7924375800,2876035930521600,
 2693451205324687500000,
 5648896640332217707816550400,
 23819277009290664033936067933468800,
 185754160490281505676324140907107450880000,
 2507604631016507710974687639612411760216253760000]