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A306515 as a simple table

na(n)
11010100
210110100
3101000100
4101101000
51010101100
61011101000
710110001000
810111010000
9101001000100
10101101011000
11101111010000
121010111001100
131011100010000
141011110100000
1510101001010100
1610110010001000
1710111010110000
1810111110100000
19101001001000100
20101010010110100

[1010100,10110100,101000100,101101000,1010101100,
 1011101000,10110001000,10111010000,101001000100,
 101101011000,101111010000,1010111001100,
 1011100010000,1011110100000,10101001010100,
 10110010001000,10111010110000,10111110100000,
 101001001000100,101010010110100]