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A043040 Numbers that are palindromic and divisible by 5. 3
5, 55, 505, 515, 525, 535, 545, 555, 565, 575, 585, 595, 5005, 5115, 5225, 5335, 5445, 5555, 5665, 5775, 5885, 5995, 50005, 50105, 50205, 50305, 50405, 50505, 50605, 50705, 50805, 50905, 51015, 51115, 51215, 51315, 51415, 51515, 51615, 51715, 51815, 51915 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Or, numbers that are palindromic and begin with 5.

LINKS

Jaroslav Krizek, Table of n, a(n) for n = 1..2222

MATHEMATICA

palQ[n_Integer, base_Integer] := Module[{idn = IntegerDigits[n, base]}, idn == Reverse[idn]]; Select[Range[0, 100000], IntegerDigits[#][[1]] == 5 && palQ[#, 10] &] (* T. D. Noe, Mar 12 2013 *)

Select[5*Range[11000], IntegerDigits[#]==Reverse[IntegerDigits[#]]&] (* Harvey P. Dale, Nov 29 2015 *)

CROSSREFS

Sequence in context: A144894 A247775 A045640 * A226561 A062183 A002279

Adjacent sequences:  A043037 A043038 A043039 * A043041 A043042 A043043

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified March 23 04:40 EDT 2017. Contains 283905 sequences.