A222723 - OEIS

A222723

Palindromic primes starting with a digit 1.

11, 101, 131, 151, 181, 191, 10301, 10501, 10601, 11311, 11411, 12421, 12721, 12821, 13331, 13831, 13931, 14341, 14741, 15451, 15551, 16061, 16361, 16561, 16661, 17471, 17971, 18181, 18481, 19391, 19891, 19991, 1003001, 1008001, 1022201, 1028201, 1035301, 1043401

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OFFSET

1,1

COMMENTS

Subsequence of A002385 (palindromic primes) and A002113 (palindromic numbers). Complement of A222724 (palindromic nonprime numbers starting with a digit 1) with respect to A043036 (palindromic numbers starting with a digit 1).

LINKS

Jaroslav Krizek, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Prime[Range[85000]], PalindromeQ[#]&&IntegerDigits[#][[1]]==1&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Mar 14 2018 *)

CROSSREFS

Cf. A002385, A002113, A222724, A043036.

Sequence in context: A208362 A159613 A062332 * A088281 A068685 A109830

Adjacent sequences: A222720 A222721 A222722 * A222724 A222725 A222726

KEYWORD

nonn,base

AUTHOR

Jaroslav Krizek, Mar 03 2013

STATUS

approved