The next term contains a non-decimal digit.
The term 111....1111 should officially be called the "unary expansion", since in base 1 only the digit 0 may appear.
Table of n, a(n) for n=1..11.
Sequence in context: A033290 A095578 A095580 * A095584 A095586 A095588
Adjacent sequences: A095579 A095580 A095581 * A095583 A095584 A095585
N. J. A. Sloane, Jun 04 2004