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A014844 as a simple table

na(n)
01
12
23
35
410
522
649
7107
8228
9476
10979
111993
124030
138114
1416293
1532663
1665416
17130936
18261991
19524117
201048386
212096942
224194073
238388355
2416776940
2533554132
2667108539
27134217377
28268435078
29536870506
301073741389
312147483183

[1,2,3,5,10,22,49,107,228,476,979,1993,4030,8114,
 16293,32663,65416,130936,261991,524117,1048386,
 2096942,4194073,8388355,16776940,33554132,
 67108539,134217377,268435078,536870506,1073741389,
 2147483183]