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A180699 as a simple table

na(n)
11
2256
3309485009821345068724781056
44096
55192296858534827628530496329220096
665536
772057594037927936
883076749736557242056487941267521536
991343852333181432387730302044767688728495783936
101048576

[1,256,309485009821345068724781056,4096,
 5192296858534827628530496329220096,65536,
 72057594037927936,
 83076749736557242056487941267521536,
 91343852333181432387730302044767688728495783936,
 1048576]