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A286121 as a simple table

na(n)
01
110
210
30
4100
50
6111000
70
811010000
90
101001100000
110
12111011000000
131000000000
141110000000
15101110000000000
16100000100000000
1710100100000000000
1810100111000000000
191010101000000000000
20110000000000
21100101110000000000000
2211100000000000

[1,10,10,0,100,0,111000,0,11010000,0,1001100000,0,
 111011000000,1000000000,1110000000,
 101110000000000,100000100000000,10100100000000000,
 10100111000000000,1010101000000000000,
 110000000000,100101110000000000000,11100000000000]