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..13.
Sequence in context: A141756 A155538 A095550 * A095554 A095556 A095558
Adjacent sequences: A095549 A095550 A095551 * A095553 A095554 A095555
N. J. A. Sloane, Jun 04 2004