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A327461 as a simple table

na(n)
13
25
37
411
519
631
747
879
9143
10271
11511
12767
131279
142303
154351
168447
1716639
1833023
1965791
20131071
21196607
22327679
23589823
241114111
252162687
264259839
278454143
2816842751
2933619967
3067174399
31134283263
32268500991
33536936447
341073807359
352147549183
364295032831

[3,5,7,11,19,31,47,79,143,271,511,767,1279,2303,
 4351,8447,16639,33023,65791,131071,196607,327679,
 589823,1114111,2162687,4259839,8454143,16842751,
 33619967,67174399,134283263,268500991,536936447,
 1073807359,2147549183,4295032831]