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A288900 as a simple table

na(n)
01
11
211
31011
4111
5111
61101111
711001111
811111
91000011111
1010000111111
11100000111111
121011101111111
1310111001111111
14100001011111111
151001100011111111
1610010110111111111
17100001100111111111
181000000101111111111
1910001101001111111111

[1,1,11,1011,111,111,1101111,11001111,11111,
 1000011111,10000111111,100000111111,1011101111111,
 10111001111111,100001011111111,1001100011111111,
 10010110111111111,100001100111111111,
 1000000101111111111,10001101001111111111]