Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #69 Nov 19 2024 06:34:20
%S 3,5,11,17,83,431,509,130021,148091,433781
%N Prime-indexed primes p such that Fibonacci(p) is prime.
%C Intersection of A006450 and A083668. - _Michel Marcus_, Oct 21 2016
%F a(n) = prime(A277575(n)).
%F a(n) = prime(prime(A122534(n))).
%e 17 = A000040(7), with 7 itself being a prime, and A000045(17) = 1597, a prime, thus 17 is included in this sequence.
%t Select[Prime[Prime[Range[37000]]],PrimeQ[Fibonacci[#]]&] (* _Harvey P. Dale_, Sep 12 2019 *)
%o (PARI) isok(p) = isprime(p) && isprime(primepi(p)) && isprime(fibonacci(p)); \\ _Michel Marcus_, Oct 21 2016
%Y Cf. A000040, A000045, A006450, A083668, A122534, A277575.
%K nonn,hard,more
%O 1,1
%A _Bobby Jacobs_, Oct 21 2016