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%I #18 Jul 10 2020 18:14:44
%S 13,44,88,176,847,1595,7546,14003,44044,88088,176176,847847,1596595,
%T 7553546,14007103,44177144,88354288,176599676,853595347,1597190705,
%U 6668108656,13236127322,35608290553,71117571206
%N Trajectory of 13 under map x->x + (x-with-digits-reversed).
%C To get the next term, reverse the present term and add it to itself.
%H Alois P. Heinz, <a href="/A033652/b033652.txt">Table of n, a(n) for n = 0..1000</a>
%H <a href="/index/Res#RAA">Index entries for sequences related to Reverse and Add!</a>
%F a(n+1) = a(n) + {a(n) reversed}.
%e 44 = 13 + 31.
%t NestList[#+FromDigits[Reverse[IntegerDigits[#]]]&,13,30] (* _Harvey P. Dale_, Mar 04 2015 *)
%Y Row n=13 of A243238.
%K nonn,base
%O 0,1
%A _N. J. A. Sloane_.
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