%I A072018
%S A072018 4899999987,4989999897,4999889997,4999997889,5889998997,5889999969,
%T A072018 5898989997,5898998988,5899899789,5899979979,5899987998,5899989699,
%U A072018 5899996989,5979999879,5988899997,5988998898,5989889979,5989897998
%N A072018 GCD[n,Rev[n]] = 243 = 3^5, where Rev[x] = A004086[x].
%e A072018 m = 4899999987 = 3.3.3.3.3.157.128437 and Rev[m] = 78999999984 = 2.2.2.2.3.3.3.3.3.3.2031893, 
               GCD = 243. Numerous but not all solutions are obtained intercalating 
               string of 9-s between digits of A071016. Further such regular transformations 
               exist.
%Y A072018 Cf. A004086, A055483, A069554, A071686, A072005, A072016.
%Y A072018 Sequence in context: A128172 A050259 A015384 this_sequence A158726 A017409 
               A017529
%Y A072018 Adjacent sequences: A072015 A072016 A072017 this_sequence A072019 A072020 
               A072021
%K A072018 nonn
%O A072018 1,1
%A A072018 Labos E. (labos(AT)ana.sote.hu), Jun 05 2002