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A145117 as a simple table

na(n)
01
12
24
38
416
532
664
7128
8256
9512
101024
112047
124091
138175
1416335
1532639
1665215
17130303
18260351
19520191
201039359
212076672
224149254
238290334
2416564334
2533096030
2666126846
27132123390
28263986430
29527452670
301053865982
312105655293
324207161333
338406032333

[1,2,4,8,16,32,64,128,256,512,1024,2047,4091,8175,
 16335,32639,65215,130303,260351,520191,1039359,
 2076672,4149254,8290334,16564334,33096030,
 66126846,132123390,263986430,527452670,1053865982,
 2105655293,4207161333,8406032333]