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A280613 as a simple table

na(n)
01
10
2100
311
410100
510011
61000000
7101111
8100010000
910001111
1010001000000
111000111111
121010101000000
131010100111111
14100010000000000
1510001011111111
1610101000100000000
1710100100011111111
181000000010000000000
19111110001111111111
20100000001010000000000

[1,0,100,11,10100,10011,1000000,101111,100010000,
 10001111,10001000000,1000111111,1010101000000,
 1010100111111,100010000000000,10001011111111,
 10101000100000000,10100100011111111,
 1000000010000000000,111110001111111111,
 100000001010000000000]