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A003527 as a simple table

na(n)
11
23
35
415
517
651
785
8255
9257
10771
111285
123855
134369
1413107
1521845
1665535

[1,3,5,15,17,51,85,255,257,771,1285,3855,4369,
 13107,21845,65535]