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A055496 as a simple table

na(n)
12
25
311
423
547
697
7197
8397
9797
101597
113203
126421
1312853
1425717
1551437
16102877
17205759
18411527
19823117
201646237
213292489
226584983
2313169977
2426339969
2552679969
26105359939
27210719881
28421439783
29842879579
301685759167
313371518343

[2,5,11,23,47,97,197,397,797,1597,3203,6421,12853,
 25717,51437,102877,205759,411527,823117,1646237,
 3292489,6584983,13169977,26339969,52679969,
 105359939,210719881,421439783,842879579,
 1685759167,3371518343]