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A383850 as a simple table

na(n)
10
21
33
47
510
615
731
863
9127
10153
11170
12204
13255
14292
15365
16438
17511
181023
192047
202275
212405
222470
232665
242730
252860
263185
273250
283380
293640
304095
318191
3216383
3332767
3434695
3534952
3635723
3736237
3836494
3937779
4038293
4138550
4239321
4339578
4440092
4541891
4642405
4742662
4843433
4943690

[0,1,3,7,10,15,31,63,127,153,170,204,255,292,365,
 438,511,1023,2047,2275,2405,2470,2665,2730,2860,
 3185,3250,3380,3640,4095,8191,16383,32767,34695,
 34952,35723,36237,36494,37779,38293,38550,39321,
 39578,40092,41891,42405,42662,43433,43690]