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A309055 as a simple table

na(n)
12
217
320
443
5107
6142
7176
81291
91748
103309
115114
129412
1313032
1453799
1562195
16258834
17515752
18590919
191880056
204387977
214982469
228725487
2310021836
2422701799
2534769113
2675672055
273847032954
286476460401
298607624876
3013054048917
3140404144055
3255300901872

[2,17,20,43,107,142,176,1291,1748,3309,5114,9412,
 13032,53799,62195,258834,515752,590919,1880056,
 4387977,4982469,8725487,10021836,22701799,
 34769113,75672055,3847032954,6476460401,
 8607624876,13054048917,40404144055,55300901872]