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A105991 as a simple table

na(n)
110
2111
31011
41101
51111
610001
711101
811111
9100001
10101011
11110101
12110111
13111001
14111011
15111101
161000001
171000011
181000101
191000111
201001001
211001101
221001111
231010001
241010111
251100111
261101011
271110001
281110011
291110101
301111001
311111111
3210000001

[10,111,1011,1101,1111,10001,11101,11111,100001,
 101011,110101,110111,111001,111011,111101,1000001,
 1000011,1000101,1000111,1001001,1001101,1001111,
 1010001,1010111,1100111,1101011,1110001,1110011,
 1110101,1111001,1111111,10000001]