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A266673 as a simple table

na(n)
01
11
21010
31001011
41001100
511001010111
61001011000
7111001001101111
81001010110000
91111001001011011111
101001001101100000
1111111001001010110111111
121001001011011000000
13111111001001001101101111111
141001001010110110000000
151111111001001001011011011111111

[1,1,1010,1001011,1001100,11001010111,1001011000,
 111001001101111,1001010110000,1111001001011011111,
 1001001101100000,11111001001010110111111,
 1001001011011000000,111111001001001101101111111,
 1001001010110110000000,
 1111111001001001011011011111111]