A043038 - OEIS

A043038

Base-10 palindromes that starts with 3.

3, 33, 303, 313, 323, 333, 343, 353, 363, 373, 383, 393, 3003, 3113, 3223, 3333, 3443, 3553, 3663, 3773, 3883, 3993, 30003, 30103, 30203, 30303, 30403, 30503, 30603, 30703, 30803, 30903, 31013, 31113, 31213, 31313, 31413, 31513, 31613, 31713, 31813, 31913

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Subsequence of A002113 (palindromic numbers). Union of A222725 (palindromic primes starting with a digit 3) and A222726 (palindromic composite numbers starting with a digit 3). - Jaroslav Krizek, Mar 12 2013

LINKS

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

MATHEMATICA

okQ[n_]:=Module[{idn=IntegerDigits[n]}, First[idn]==3 && n==FromDigits[Reverse[idn]]]; Select[Range[40000], okQ] (* Harvey P. Dale, Jan 14 2011 *)

CROSSREFS

Sequence in context: A003129 A190542 A180416 * A274264 A107127 A207323

Adjacent sequences: A043035 A043036 A043037 * A043039 A043040 A043041

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved