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A067899 Fractal palindromic primes of second order. 1
3135313, 3732373, 3836383, 7276727, 7278727, 7576757, 7873787, 7977797, 11311511311, 11411311411, 13331113331, 13331713331, 13831913831, 13931413931, 17471317471, 19391319391, 31513531513, 31513831513, 31513931513, 37273937273, 37573237573, 37573337573 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
11411311411 is a palindromic prime in the sequence because about the middle 3, either wing 11411 is itself a palindromic prime, further made up, about a middle 4, of wings 11, another palindromic prime.
CROSSREFS
Sequence in context: A186551 A172606 A234151 * A234449 A204629 A235070
KEYWORD
base,nonn
AUTHOR
Lekraj Beedassy, May 13 2003
EXTENSIONS
a(11) onward corrected by Sean A. Irvine, Jan 12 2024
STATUS
approved

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Last modified June 13 10:24 EDT 2024. Contains 373383 sequences. (Running on oeis4.)