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A013881 as a simple table

na(n)
065536
168719476736
272057594037927936
375557863725914323419136
479228162514264337593543950336
583076749736557242056487941267521536
687112285931760246646623899502532662132736
791343852333181432387730302044767688728495783936

[65536,68719476736,72057594037927936,
 75557863725914323419136,
 79228162514264337593543950336,
 83076749736557242056487941267521536,
 87112285931760246646623899502532662132736,
 91343852333181432387730302044767688728495783936]