%I A031351
%S A031351 0,4,4,2,3,3,2,3,2,1,1,4,4,2,3,3,2,3,2,1,4,2,3,3,2,4,3,2,3,1,4,3,2,
%T A031351 4,3,3,2,3,2,1,2,3,4,2,2,3,2,3,2,1,3,2,3,2,3,2,3,2,3,1,3,4,3,3,2,2,
%U A031351 2,2,2,1,2,3,2,2,3,2,3,2,3,1,3,2,3,3,2,2,2,2,3,1,2,3,2,2,3,2,3,3,2
%N A031351 5-multiplicative persistence: number of iterations of "multiply 5th powers 
               of digits" needed to reach 0 or 1.
%H A031351 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               MultiplicativePersistence.html">Link to a section of The World of 
               Mathematics.</a>
%Y A031351 Sequence in context: A161778 A099655 A146899 this_sequence A068923 A103714 
               A112108
%Y A031351 Adjacent sequences: A031348 A031349 A031350 this_sequence A031352 A031353 
               A031354
%K A031351 nonn
%O A031351 0,2
%A A031351 Eric Weisstein (eric(AT)weisstein.com)