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A282659 as a simple table

na(n)
01
11
26
37
424
531
696
7127
8416
9511
101664
112047
126656
138191
1427136
1532767
16109056
17131071
18436224
19524287
201744896
212097151
226979584
238388607
2427918336
2533554431
26111804416
27134217727
28447348736
29536870911
301789001728
312147483647
327158235136
338589934591

[1,1,6,7,24,31,96,127,416,511,1664,2047,6656,8191,
 27136,32767,109056,131071,436224,524287,1744896,
 2097151,6979584,8388607,27918336,33554431,
 111804416,134217727,447348736,536870911,
 1789001728,2147483647,7158235136,8589934591]