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A290189 as a simple table

na(n)
12
217
3254561089305599
48483004771271882804592639999
5706526001186582385898210420541078864497278132689882316799999999
6353401447088718405944982176443380974931403135679741865504466985287679999999999

[2,17,254561089305599,
 8483004771271882804592639999,
 70652600118658238589821042054107886449727813268988\
 2316799999999,
 35340144708871840594498217644338097493140313567974\
 1865504466985287679999999999]