A067899 - OEIS

A067899

Fractal palindromic primes of second order.

3135313, 3732373, 3836383, 7276727, 7278727, 7576757, 7873787, 7977797, 11311511311, 11411311411, 13331113331, 13331713331, 13831913831, 13931413931, 17471317471, 19391319391, 31513531513, 31513831513, 31513931513, 37273937273, 37573237573, 37573337573

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OFFSET

1,1

LINKS

Sean A. Irvine, Table of n, a(n) for n = 1..1000

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

Cf. A082584, A082599.

Sequence in context: A186551 A172606 A234151 * A234449 A204629 A235070

Adjacent sequences: A067896 A067897 A067898 * A067900 A067901 A067902

KEYWORD

base,nonn

AUTHOR

Lekraj Beedassy, May 13 2003

EXTENSIONS

a(11) onward corrected by Sean A. Irvine, Jan 12 2024

STATUS

approved