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A065212 Seven 'Reverse and Add' steps are needed to reach a palindrome. 3

%I #11 Sep 24 2013 02:52:41

%S 188,190,197,287,296,386,395,485,584,593,683,692,782,791,881,890,980,

%T 1394,1484,1574,1664,1754,1844,1898,1934,1988,1992,1994,1999,2393,

%U 2483,2573,2663,2753,2843,2897,2933,2987,2991,2993,2998,3089,3179,3269,3359

%N Seven 'Reverse and Add' steps are needed to reach a palindrome.

%C The number of steps starts at 0, so palindromes (cf. A002113) are excluded.

%H Vincenzo Librandi, <a href="/A065212/b065212.txt">Table of n, a(n) for n = 1..1000</a>

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

%t lenQ[n_]:= Length[NestWhileList[# + FromDigits[Reverse[IntegerDigits[#]]]&, n,#!= FromDigits[Reverse[IntegerDigits[#]]]&, 1, 10]] == 8; Select[Range[500], lenQ] (* _Vincenzo Librandi_, Sep 24 2013 *)

%Y A002113, A015986, A065206.

%K nonn,base

%O 1,1

%A _Klaus Brockhaus_, Oct 21 2001

%E OFFSET changed from 0,1 to 1,1 by _Harry J. Smith_, Oct 14 2009

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Last modified June 7 22:01 EDT 2024. Contains 373206 sequences. (Running on oeis4.)