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A043036 Base 10 palindromes that start with 1. 3
1, 11, 101, 111, 121, 131, 141, 151, 161, 171, 181, 191, 1001, 1111, 1221, 1331, 1441, 1551, 1661, 1771, 1881, 1991, 10001, 10101, 10201, 10301, 10401, 10501, 10601, 10701, 10801, 10901, 11011, 11111, 11211, 11311, 11411, 11511, 11611, 11711, 11811, 11911 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Union of A222723 (palindromic primes starting with a digit 1) and A222724 (palindromic nonprime numbers starting with a digit 1). - Jaroslav Krizek, Mar 03 2013
LINKS
Harvey P. Dale and Jaroslav Krizek, Table of n, a(n) for n = 1..2222 (first 1000 terms from Harvey P. Dale)
MATHEMATICA
palQ[n_Integer, base_Integer] := Module[{idn = IntegerDigits[n, base]}, idn == Reverse[idn]]; Select[Range[0, 20000], IntegerDigits[#][[1]] == 1 && palQ[#, 10] &] (* T. D. Noe, Mar 12 2013 *)
CROSSREFS
Cf. A002113 (palindromes in base 10).
Sequence in context: A115824 A364326 A208259 * A072001 A265510 A265528
KEYWORD
nonn,base
AUTHOR
STATUS
approved

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Last modified June 23 08:25 EDT 2024. Contains 373629 sequences. (Running on oeis4.)