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Start with 1 and repeatedly reverse the digits and add 11 to get the next term.
1

%I #7 Jul 20 2015 10:57:40

%S 1,12,32,34,54,56,76,78,98,100,12,32,34,54,56,76,78,98,100,12,32,34,

%T 54,56,76,78,98,100,12,32,34,54,56,76,78,98,100,12,32,34,54,56,76,78,

%U 98,100,12,32,34,54,56,76,78,98,100,12,32,34,54,56,76,78,98,100

%N Start with 1 and repeatedly reverse the digits and add 11 to get the next term.

%H N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki.

%H <a href="/index/Rec#order_09">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 1).

%F After 1 step enters a cycle of length 9.

%Y Cf. A117828, A117816, A117817.

%K nonn,base

%O 1,2

%A _N. J. A. Sloane_, May 06 2006