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A289937 as a simple table

na(n)
01
110
2111
31111
411100
5111100
61111100
711111100
8111110000
91111110000
1011111110000
11111111110000
121111111110000
1311111111110000
14111111111110000
151111111111110000
1611111111100000000
17111111111100000000
181111111111100000000
1911111111111100000000

[1,10,111,1111,11100,111100,1111100,11111100,
 111110000,1111110000,11111110000,111111110000,
 1111111110000,11111111110000,111111111110000,
 1111111111110000,11111111100000000,
 111111111100000000,1111111111100000000,
 11111111111100000000]