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A204791 as a simple table

na(n)
13871
213555
313555
444641
5224843
644641
7180069
8793645
9793645
10180069
11688431
1214627079
135719981
1414627079
15688431
162831919
1759657161
1878694139
1978694139
2059657161
212831919
2211333145
23986079019
24708088685
257174463023
26708088685

[3871,13555,13555,44641,224843,44641,180069,
 793645,793645,180069,688431,14627079,5719981,
 14627079,688431,2831919,59657161,78694139,
 78694139,59657161,2831919,11333145,986079019,
 708088685,7174463023,708088685]