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A255133 as a simple table

na(n)
01
11
22
38
464
52048
61048576
768719476736
818446744073709551616
9166153499473114484112975882535043072
10822752278660603021077484591278675252491367932816789931674304512
114925250774549309901534880012517951725634967408808180833493536675530715221437151326426783281860614455100828498788352

[1,1,2,8,64,2048,1048576,68719476736,
 18446744073709551616,
 166153499473114484112975882535043072,
 82275227866060302107748459127867525249136793281678\
 9931674304512,
 49252507745493099015348800125179517256349674088081\
 80833493536675530715221437151326426783281860614455\
 100828498788352]