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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A138722 as a simple table

na(n)
1110011
2111000111
3111110000011111
4111111100000001111111
5111111111110000000000011111111111
6111111111111100000000000001111111111111

[110011,111000111,111110000011111,
 111111100000001111111,
 111111111110000000000011111111111,
 111111111111100000000000001111111111111]