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A085209 as a simple table

na(n)
00
11
21
310
411
510
611
7101
8110
911
10100
11111
121010
13111
14100
15101
161001
171110
181011
191100
20101
21110
221011
2310010
241111
2510100
261101
27110
28111
291101
3010110
3110011
3211100
3310101
341110
35111
361000
371111
3811010
3910111
40100100
4111101
4210110
431111
441000
451001

[0,1,1,10,11,10,11,101,110,11,100,111,1010,111,
 100,101,1001,1110,1011,1100,101,110,1011,10010,
 1111,10100,1101,110,111,1101,10110,10011,11100,
 10101,1110,111,1000,1111,11010,10111,100100,11101,
 10110,1111,1000,1001]