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A104066 as a simple table

na(n)
111
223
371
4263
51031
665543
7262151
81048583
9268435463
101073741831
11274877906951
1217592186044423
13302231454903657293676551
14309485009821345068724781063
15316912650057057350374175801351

[11,23,71,263,1031,65543,262151,1048583,268435463,
 1073741831,274877906951,17592186044423,
 302231454903657293676551,
 309485009821345068724781063,
 316912650057057350374175801351]