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A199932 as a simple table

na(n)
11
23
35
412
517
647
765
8169
9279
10645
111025
122698
134097
149917
1517345
1639698
1765537
18161395
19262145
20624004
211089007
222449881
234194305
2410097733
2516812683
2638754747
2769117097
28155178266
29268435457
30629929761
311073741825
322459703907
334400500499
349756737721

[1,3,5,12,17,47,65,169,279,645,1025,2698,4097,
 9917,17345,39698,65537,161395,262145,624004,
 1089007,2449881,4194305,10097733,16812683,
 38754747,69117097,155178266,268435457,629929761,
 1073741825,2459703907,4400500499,9756737721]