A216559 Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 5*b^2.

11, 29, 131, 359, 431, 449, 509, 569, 571, 2971, 9311, 14431, 25561, 35999, 37511, 81839, 104911, 130021, 148091, 397379, 433781, 590041, 593689, 604711, 1803059, 1968721

Offset

1,1

Links

Table of n, a(n) for n=1..26.

Blair Kelly, Factorizations of Fibonacci and Lucas numbers

Crossrefs

Cf. A000045, A001605.

Sequence in context: A135064 A179502 A053703 * A099911 A118638 A088460

Adjacent sequences: A216556 A216557 A216558 * A216560 A216561 A216562

Keyword

nonn

Author

V. Raman, Sep 08 2012

Status

approved