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

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

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

Programs

Mathematica

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