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A374179 as a simple table

na(n)
12
211
347
4139
5157
6191
71151
81531
93067
107159
1120479
1236857
1349139
1498299
15360439
16917503
171310719
18786431
196291449
205242877
2120971507
2258720253
2383886053
24201326557
25335544301
26402653171
273489660919
281879048183
295368709117
3025769803751
3121474836479
3277309411323

[2,11,47,139,157,191,1151,1531,3067,7159,20479,
 36857,49139,98299,360439,917503,1310719,786431,
 6291449,5242877,20971507,58720253,83886053,
 201326557,335544301,402653171,3489660919,
 1879048183,5368709117,25769803751,21474836479,
 77309411323]