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A074815 n is a term iff there are no prime numbers between reverse(n) and 3*n. 0
0, 14, 247, 298, 1003, 2998, 10003, 12473, 17525, 19995, 27528, 29998, 199995, 299998, 1000003, 1824745, 1875265, 1999995, 2124736, 2475247, 2700018, 3124739 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

n such that the number of primes between n and 3n (inclusive) = number of primes between n and reverse(n) (inclusive).

LINKS

Table of n, a(n) for n=0..21.

EXAMPLE

14 is here since there are seven primes between 14 and 41 and seven primes between 14 and 3*14=42.

CROSSREFS

Sequence in context: A326651 A055477 A123774 * A280122 A051622 A113377

Adjacent sequences:  A074812 A074813 A074814 * A074816 A074817 A074818

KEYWORD

base,nonn

AUTHOR

Jason Earls, Sep 08 2002

EXTENSIONS

More terms from Lior Manor Sep 17 2002

STATUS

approved

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Last modified September 25 09:48 EDT 2020. Contains 337336 sequences. (Running on oeis4.)