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A222724 Palindromic nonprime numbers starting with a digit 1. 3
1, 111, 121, 141, 161, 171, 1001, 1111, 1221, 1331, 1441, 1551, 1661, 1771, 1881, 1991, 10001, 10101, 10201, 10401, 10701, 10801, 10901, 11011, 11111, 11211, 11511, 11611, 11711, 11811, 11911, 12021, 12121, 12221, 12321, 12521, 12621, 12921, 13031, 13131, 13231 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Subsequence of A032350 (palindromic nonprime numbers) and A002113 (palindromic numbers). Complement of A222723 (palindromic primes 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

CROSSREFS

Cf. A032350, A002113, A222723, A043036.

Sequence in context: A326109 A338111 A208260 * A343760 A280635 A280732

Adjacent sequences:  A222721 A222722 A222723 * A222725 A222726 A222727

KEYWORD

nonn,base

AUTHOR

Jaroslav Krizek, Mar 03 2013

STATUS

approved

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Last modified November 28 18:22 EST 2021. Contains 349415 sequences. (Running on oeis4.)