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A069598 as a simple table

na(n)
12
23
35
47
511
6101
710111
8101111
91011001
101100101
1110010101
1210011101
1310100011
1410101101
1510110011
1610111001
1711000111
1811100101
1911110111
2011111101
21100100111
22100111001
23101001001
24101001011
25101100011
26101101111

[2,3,5,7,11,101,10111,101111,1011001,1100101,
 10010101,10011101,10100011,10101101,10110011,
 10111001,11000111,11100101,11110111,11111101,
 100100111,100111001,101001001,101001011,101100011,
 101101111]