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A066768 as a simple table

na(n)
11
23
37
423
571
6261
7925
83455
912877
1048693
11184757
12705713
132704157
1410401527
1540116677
16155120975
17601080391
182333619351
199075135301
2035345312513
21137846529751
22538258059199
232104098963721
248233431436745
2532247603683171

[1,3,7,23,71,261,925,3455,12877,48693,184757,
 705713,2704157,10401527,40116677,155120975,
 601080391,2333619351,9075135301,35345312513,
 137846529751,538258059199,2104098963721,
 8233431436745,32247603683171]