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A231891 as a simple table

na(n)
01
1100
211
31000
410
5101
61011
7110
81101
910001
101110
1110010
121111
1310000
14111
151001
161010
171100
1810011
1910100
2010101
2110110
2211000
2310111
24100000
2511011
26100001
2711001
2811010
2911100
30100010
3111101
32100011

[1,100,11,1000,10,101,1011,110,1101,10001,1110,
 10010,1111,10000,111,1001,1010,1100,10011,10100,
 10101,10110,11000,10111,100000,11011,100001,11001,
 11010,11100,100010,11101,100011]