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A288973 as a simple table

na(n)
01
111
2101
31111
411011
5111111
61110001
711111111
8111100101
91111111111
1011111001101
11111111110111
121111110001101
1311111111111111
14111111100101101
151111111111011111
1611111111000101111
17111111111110011101
181111111110011111111
1911111111111101011011

[1,11,101,1111,11011,111111,1110001,11111111,
 111100101,1111111111,11111001101,111111110111,
 1111110001101,11111111111111,111111100101101,
 1111111111011111,11111111000101111,
 111111111110011101,1111111110011111111,
 11111111111101011011]