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A209586 as a simple table

na(n)
12
216
3192
49216
5663552
6191102976
782556485632
8142657607172096
9369768517790072832
103833759992447475122176
1159622635402543133100081152
123709004903121403223889848303616
13346094665520064377627609524907016192

[2,16,192,9216,663552,191102976,82556485632,
 142657607172096,369768517790072832,
 3833759992447475122176,59622635402543133100081152,
 3709004903121403223889848303616,
 346094665520064377627609524907016192]