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A277290 Prime-indexed primes p such that Lucas(p) is prime. 2
5, 11, 17, 31, 41, 353, 617, 4787, 5851, 148091, 637751 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..11.

FORMULA

a(n) = prime(A123677(n)).

a(n) = prime(prime(A123678(n)).

EXAMPLE

17 = A000040(7), with 7 itself being a prime, and A000032(17) = 3571, a prime, thus 17 is included in this sequence.

CROSSREFS

Cf. A000032, A000040, A123677, A123678.

Subsequence of A006450. See also A168033.

Sequence in context: A087373 A155030 A030468 * A085634 A157478 A297583

Adjacent sequences: A277287 A277288 A277289 * A277291 A277292 A277293

KEYWORD

nonn,hard,more

AUTHOR

Bobby Jacobs, Oct 21 2016

STATUS

approved

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Last modified December 5 02:30 EST 2022. Contains 358572 sequences. (Running on oeis4.)