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A215022 as a simple table

na(n)
00
11
2100
3101
410010
510000
610001
710100
810101
91001010
101001000
111001001
121000010
131000000
141000001
151000100
161000101
171010010
181010000
191010001
201010100
211010101
22100101010
23100101000
24100101001
25100100010
26100100000
27100100001
28100100100
29100100101
30100001010

[0,1,100,101,10010,10000,10001,10100,10101,
 1001010,1001000,1001001,1000010,1000000,1000001,
 1000100,1000101,1010010,1010000,1010001,1010100,
 1010101,100101010,100101000,100101001,100100010,
 100100000,100100001,100100100,100100101,100001010]