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A033657 Trajectory of 23 under map x->x + (x-with-digits-reversed). 0

%I #14 Dec 30 2023 22:09:01

%S 23,55,110,121,242,484,968,1837,9218,17347,91718,173437,907808,

%T 1716517,8872688,17735476,85189247,159487405,664272356,1317544822,

%U 3602001953,7193004016,13297007933,47267087164

%N Trajectory of 23 under map x->x + (x-with-digits-reversed).

%H <a href="/index/Res#RAA">Index entries for sequences related to Reverse and Add!</a>

%F a(n) = A033655(n-1) = A033650(n+1), n>1. - _R. J. Mathar_, Oct 22 2008

%Y Cf. A033650, A033655.

%K nonn,base

%O 0,1

%A _N. J. A. Sloane_.

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Last modified July 21 00:28 EDT 2024. Contains 374461 sequences. (Running on oeis4.)