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

A066138 as a simple table

na(n)
03
1111
210101
31001001
4100010001
510000100001
61000001000001
7100000010000001
810000000100000001
91000000001000000001
10100000000010000000001
1110000000000100000000001
121000000000001000000000001
13100000000000010000000000001
1410000000000000100000000000001
151000000000000001000000000000001

[3,111,10101,1001001,100010001,10000100001,
 1000001000001,100000010000001,10000000100000001,
 1000000001000000001,100000000010000000001,
 10000000000100000000001,1000000000001000000000001,
 100000000000010000000000001,
 10000000000000100000000000001,
 1000000000000001000000000000001]