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A185881 as a simple table

na(n)
11011
210011
3101111
41001001
510110110
61011011
710011011
8101111011
91001001011
1010110110011
11100110111111
121011110100001
1310010010010010
141001001001001
1510110110110110
161011011011011
1710011011011011
18101111011011011
191001001011011011
2010110110011011011
21100110111111011011
221011110100001011011

[1011,10011,101111,1001001,10110110,1011011,
 10011011,101111011,1001001011,10110110011,
 100110111111,1011110100001,10010010010010,
 1001001001001,10110110110110,1011011011011,
 10011011011011,101111011011011,1001001011011011,
 10110110011011011,100110111111011011,
 1011110100001011011]