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A084184 as a simple table

na(n)
00
11
22
37
410
531
642
7127
8170
9511
10682
112047
122730
138191
1410922
1532767
1643690
17131071
18174762
19524287
20699050
212097151
222796202
238388607
2411184810
2533554431
2644739242
27134217727
28178956970
29536870911
30715827882
312147483647
322863311530
338589934591

[0,1,2,7,10,31,42,127,170,511,682,2047,2730,8191,
 10922,32767,43690,131071,174762,524287,699050,
 2097151,2796202,8388607,11184810,33554431,
 44739242,134217727,178956970,536870911,715827882,
 2147483647,2863311530,8589934591]