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A123001 as a simple table

na(n)
110
2100
3101
41000
51001
61010
71011
810000
910001
1010010
1110011
1210100
1310101
1410110
1510111
16100000
17100001
18100010
19100011
20100100
21100101
22100110
23100111
24101000
25101001
26101010
27101011
28101100
29101101
30101110
31101111

[10,100,101,1000,1001,1010,1011,10000,10001,10010,
 10011,10100,10101,10110,10111,100000,100001,
 100010,100011,100100,100101,100110,100111,101000,
 101001,101010,101011,101100,101101,101110,101111]