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A001391 as a simple table

na(n)
110
21110
311110
4100110
51110010110
6111100111010110
7100110011110111010110
81110010110010011011110111010110
91111001110101100111001011010011011110111010110

[10,1110,11110,100110,1110010110,111100111010110,
 100110011110111010110,
 1110010110010011011110111010110,
 1111001110101100111001011010011011110111010110]