%I A006050 M4683
%S A006050 0,10,19,199,19999999999999999999999
%N A006050 Smallest number of additive persistence n.
%D A006050 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A006050 H. J. Hindin, The additive persistence of a number, J. Rec. Math., 7 
               (No. 2, 1974), 134-135.
%H A006050 N. J. A. Sloane, <a href="http://www.research.att.com/~njas/doc/persistence.html">
               The persistence of a number</a>, J. Recreational Math., 6 (1973), 
               97-98.
%H A006050 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               AdditivePersistence.html">Link to a section of The World of Mathematics.</
               a>
%F A006050 For n>1 a(n)=2*10^((a(n-1)-1)/9)-1.
%Y A006050 Cf. A003001, A045646.
%Y A006050 Sequence in context: A110463 A121725 A110368 this_sequence A045646 A023916 
               A107859
%Y A006050 Adjacent sequences: A006047 A006048 A006049 this_sequence A006051 A006052 
               A006053
%K A006050 nonn,base,nice
%O A006050 0,2
%A A006050 N. J. A. Sloane (njas(AT)research.att.com).
%E A006050 Next term is 1 followed by 2222222222222222222222 9s.