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A279178 as a simple table

na(n)
01
11
210
311
410100
510111
61000
711001111
811010000
91011111
1011000100000
11100111111
121110101000000
13110101111111
14110100010000000
15110110011111111
16111110100000000
17110000010111111111
18101110001000000000
19110001001111111111
20101001101010000000000

[1,1,10,11,10100,10111,1000,11001111,11010000,
 1011111,11000100000,100111111,1110101000000,
 110101111111,110100010000000,110110011111111,
 111110100000000,110000010111111111,
 101110001000000000,110001001111111111,
 101001101010000000000]