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A061917 Either a palindrome or becomes a palindrome if trailing 0's are omitted. 11
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 20, 22, 30, 33, 40, 44, 50, 55, 60, 66, 70, 77, 80, 88, 90, 99, 100, 101, 110, 111, 121, 131, 141, 151, 161, 171, 181, 191, 200, 202, 212, 220, 222, 232, 242, 252, 262, 272, 282, 292, 300, 303, 313, 323, 330, 333, 343, 353, 363, 373, 383, 393, 400, 404 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

FORMULA

A136522(A004151(a(n))) = 1. [Reinhard Zumkeller, Sep 25 2011]

MATHEMATICA

PaleQ[n_Integer, base_Integer] := Module[{idn, trim = n/base^IntegerExponent[n, base]}, idn = IntegerDigits[trim, base]; idn == Reverse[idn]]; Select[Range[0, 500], PaleQ[#, 10] &] (* Lei Zhou, Dec 13 2013 *)

Join[{0}, Select[Range[500], PalindromeQ[FromDigits[Drop[IntegerDigits[#], -IntegerExponent[#, 10]]]]&]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, May 27 2017 *)

PROG

(Haskell)

a061917 n = a061917_list !! (n-1)

a061917_list = filter chi [0..] where

   chi x = zs == reverse zs where

      zs = dropWhile (== '0') $ reverse $ show x

-- Reinhard Zumkeller, Sep 25 2011

CROSSREFS

Cf. A002113, A057890, A057891.

Sequence in context: A084050 A281625 A169824 * A125289 A180482 A193460

Adjacent sequences:  A061914 A061915 A061916 * A061918 A061919 A061920

KEYWORD

nonn,base,easy,nice

AUTHOR

N. J. A. Sloane, Jun 27 2001

EXTENSIONS

Corrected by Ray Chandler, Jun 08 2009

STATUS

approved

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Last modified June 29 01:46 EDT 2017. Contains 288856 sequences.