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A266849 as a simple table

na(n)
01
1110
2100
31111011
410000
511111101111
61000000
7111111110111111
8100000000
91111111111011111111
1010000000000
1111111111111101111111111
121000000000000
13111111111111110111111111111
14100000000000000
151111111111111111011111111111111
1610000000000000000

[1,110,100,1111011,10000,11111101111,1000000,
 111111110111111,100000000,1111111111011111111,
 10000000000,11111111111101111111111,1000000000000,
 111111111111110111111111111,100000000000000,
 1111111111111111011111111111111,10000000000000000]