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 A065211 Six 'Reverse and Add' steps are needed to reach a palindrome. 2
 79, 97, 182, 281, 380, 779, 799, 889, 977, 988, 997, 1069, 1079, 1159, 1169, 1249, 1259, 1339, 1349, 1429, 1439, 1519, 1529, 1609, 1619, 1699, 1709, 1789, 1799, 1879, 1889, 1896, 1969, 1979, 1986, 2059, 2068, 2078, 2089, 2149, 2158, 2168, 2179, 2239 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The number of steps starts at 0, so palindromes (cf. A002113) are excluded. LINKS Table of n, a(n) for n=1..44. Index entries for sequences related to Reverse and Add! MATHEMATICA palQ[n_] := Module[{idn = IntegerDigits[n]}, idn == Reverse[idn]]; pal6Q[ n_]:= Module[{c=NestList[#+FromDigits[Reverse[IntegerDigits[#]]]&, n, 6]}, palQ/@c=={False, False, False, False, False, False, True}]; Select[Range[ 2300], pal6Q] (* Harvey P. Dale, Sep 09 2012 *) CROSSREFS A002113, A015984, A065206. Sequence in context: A039436 A043259 A044039 * A106757 A285228 A087537 Adjacent sequences: A065208 A065209 A065210 * A065212 A065213 A065214 KEYWORD nonn,base AUTHOR Klaus Brockhaus, Oct 21 2001 EXTENSIONS OFFSET changed from 0,1 to 1,1 by Harry J. Smith, Oct 14 2009 STATUS approved

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Last modified September 14 03:19 EDT 2024. Contains 375911 sequences. (Running on oeis4.)