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 A057190 Numbers n such that (24^n+1)/25 is a prime. 14
 7, 11, 19, 2207, 2477, 4951 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(7) > 10^5. - Robert Price, Jun 04 2013 LINKS H. Dubner and T. Granlund, Primes of the Form (b^n+1)/(b+1), J. Integer Sequences, 3 (2000), #P00.2.7. H. Lifchitz, Mersenne and Fermat primes field PROG (PARI) isok(n) = (denominator(p=(24^n+1)/25)==1) && isprime(p); \\ Michel Marcus, Oct 30 2017 CROSSREFS Sequence in context: A282037 A050562 A321806 * A106674 A184063 A076854 Adjacent sequences:  A057187 A057188 A057189 * A057191 A057192 A057193 KEYWORD nonn,more AUTHOR N. J. A. Sloane, Sep 15 2000 STATUS approved

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Last modified December 13 17:17 EST 2019. Contains 329970 sequences. (Running on oeis4.)