A043039 - OEIS

A043039

Palindromes that start with 4.

4, 44, 404, 414, 424, 434, 444, 454, 464, 474, 484, 494, 4004, 4114, 4224, 4334, 4444, 4554, 4664, 4774, 4884, 4994, 40004, 40104, 40204, 40304, 40404, 40504, 40604, 40704, 40804, 40904, 41014, 41114, 41214, 41314, 41414, 41514, 41614, 41714, 41814, 41914

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OFFSET

1,1

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]] == 4 && palQ[#, 10] &] (* T. D. Noe, Mar 12 2013 *)

CROSSREFS

Sequence in context: A341590 A297384 A178294 * A198962 A002754 A187870

Adjacent sequences: A043036 A043037 A043038 * A043040 A043041 A043042

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved