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A139697 as a simple table

na(n)
11
213
337
485
5181
6373
7757
81525
93061
106133
1112277
1224565
1349141
1498293
15196597
16393205
17786421
181572853
193145717
206291445
2112582901
2225165813
2350331637
24100663285
25201326581
26402653173
27805306357
281610612725
293221225461
306442450933
3112884901877

[1,13,37,85,181,373,757,1525,3061,6133,12277,
 24565,49141,98293,196597,393205,786421,1572853,
 3145717,6291445,12582901,25165813,50331637,
 100663285,201326581,402653173,805306357,
 1610612725,3221225461,6442450933,12884901877]