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%I #12 Sep 25 2019 10:44:08
%S 5,505,5555,505505,5005005005,55055055055,50155155155105,
%T 5464353998993534645,541025148469303964841520145,
%U 513016415223221833242338122322514610315,5130164152232218845439796446446979345488122322514610315
%N a(1) = 5, a(n) = smallest nontrivial palindromic multiple of a(n-1). a(n) is not equal to a(n-1) or a concatenation of a(n-1) with itself.
%C Multiplier for a(9) larger than 1000000000.
%H P. De Geest, <a href="http://www.worldofnumbers.com/em36.htm">WONplate 36</a>
%Y Cf. A083152, A068666, A083147, A083149, A083153, A083155.
%K nonn,base,more
%O 1,1
%A _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 25 2003
%E More terms from _Patrick De Geest_, Jun 05 2003
%E a(5)-a(9) corrected by _Giovanni Resta_, Sep 22 2019
%E a(10) from _David A. Corneth_, Sep 22 2019
%E a(11) from _Giovanni Resta_, Sep 24 2019
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