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A281096 as a simple table

na(n)
01
111
21
311
4101
511111
61000001
710010011
8100010101
91101111111
10100000001
111000010011
1210100010101
13111100111111
141000000000001
15110010001010011
1610000000001010101
17100000000111111111
181010000000000000001
1911100101010100010011
201000101010000010101

[1,11,1,11,101,11111,1000001,10010011,100010101,
 1101111111,100000001,1000010011,10100010101,
 111100111111,1000000000001,110010001010011,
 10000000001010101,100000000111111111,
 1010000000000000001,11100101010100010011,
 1000101010000010101]