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A134580 Numbers n such that n * Fibonacci(n) - 1 is prime. 2

%I

%S 3,4,6,8,16,18,24,33,36,94,348,524,644,1218,1458,2064,2960,3591,5744,

%T 13056,27438,35193,43554

%N Numbers n such that n * Fibonacci(n) - 1 is prime.

%C Some of the larger entries may only correspond to probable primes.

%t Select[Range[1,1000],PrimeQ[#*Fibonacci[#]-1]&] (* _Julien Kluge_, Sep 20 2016 *)

%o (PARI) isok(n) = isprime(n*fibonacci(n) - 1); \\ _Michel Marcus_, Sep 20 2016

%Y Cf. A134313.

%K more,nonn

%O 1,1

%A _Jason Earls_, Jan 23 2008

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Last modified September 18 20:10 EDT 2021. Contains 347534 sequences. (Running on oeis4.)