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A372683 as a simple table

na(n)
01
12
25
310
417
533
665
7129
8257
9514
101027
112049
124097
138193
1416385
1532770
1665537
17131073
18262145
19524289
201048577
212097154
224194305
238388609
2416777217
2533554433
2667108865
27134217730
28268435457
29536870913
301073741826
312147483649
324294967297
338589934594

[1,2,5,10,17,33,65,129,257,514,1027,2049,4097,
 8193,16385,32770,65537,131073,262145,524289,
 1048577,2097154,4194305,8388609,16777217,33554433,
 67108865,134217730,268435457,536870913,1073741826,
 2147483649,4294967297,8589934594]