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A287508 as a simple table

na(n)
01
11
2110
311
411100
5111
61011000
71001111
8101110000
9100011111
1010001100000
1111100111111
121101111000000
13100001111111
14100010110000000
15111010011111111
1611011011100000000
171001000111111111
181000000011000000000
191111111001111111111
20110000011110000000000

[1,1,110,11,11100,111,1011000,1001111,101110000,
 100011111,10001100000,11100111111,1101111000000,
 100001111111,100010110000000,111010011111111,
 11011011100000000,1001000111111111,
 1000000011000000000,1111111001111111111,
 110000011110000000000]