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A230116 as a simple table

na(n)
11
23
37
49
517
651
7127
8129
9257
10771
111799
122313
134369
1413107
1532767
1632769
1765537
18196611
19458759
20589833
211114129
223342387
238323199
248454273
2516843009
2650529027
27117901063
28151587081
29286331153
30858993459
312147483647
322147483649
334294967297
3412884901891

[1,3,7,9,17,51,127,129,257,771,1799,2313,4369,
 13107,32767,32769,65537,196611,458759,589833,
 1114129,3342387,8323199,8454273,16843009,50529027,
 117901063,151587081,286331153,858993459,
 2147483647,2147483649,4294967297,12884901891]