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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
CROSSREFS
Sequence in context: A338111 A351060 A208260 * A343760 A280635 A280732
KEYWORD
nonn,base
AUTHOR
Jaroslav Krizek, Mar 03 2013
STATUS
approved

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Last modified March 19 04:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)