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A115997 Numbers k such that the concatenation of k with the k-th prime gives a palindrome. 1
7, 16638, 3631421, 141521639, 3087218304 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
prime(3087218304)=74038127803 and 308721830474038127803 is a palindrome.
CROSSREFS
Sequence in context: A203685 A134645 A327840 * A013786 A351326 A285178
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 13 2006
STATUS
approved

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Last modified April 18 18:49 EDT 2024. Contains 371781 sequences. (Running on oeis4.)