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%I #6 Mar 30 2012 16:49:58
%S 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111,
%T 1111001,11111,1321,441,321,232,171,144,121,100
%N a(n) = 121 written in base n.
%C The next term contains a non-decimal digit.
%C The term 111....1111 should officially be called the "unary expansion", since in base 1 only the digit 0 may appear.
%K nonn
%O 1,1
%A _N. J. A. Sloane_, Jun 04 2004