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A281305 as a simple table

na(n)
01
110
2110
31
410000
5110111
610000
710111111
8100010000
91110101111
101000000
11100110111111
121100010000000
1310101111111
14100111000000000
151100000011111111
16111100000000000
17100100111111111111
181011110100000000000
1910011011111111111111
20100001010100000000000

[1,10,110,1,10000,110111,10000,10111111,100010000,
 1110101111,1000000,100110111111,1100010000000,
 10101111111,100111000000000,1100000011111111,
 111100000000000,100100111111111111,
 1011110100000000000,10011011111111111111,
 100001010100000000000]