A216535 Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 7*b^2.

3, 13, 17, 29, 47, 83, 131, 431, 433, 449, 509, 4723, 9311, 9677, 14431, 35999, 50833, 81839, 104911, 201107, 397379, 931517, 1803059, 1968721

Offset

1,1

Links

Table of n, a(n) for n=1..24.

Blair Kelly, Factorizations of Fibonacci and Lucas numbers

Crossrefs

Cf. A000045, A001605.

Sequence in context: A184777 A339329 A045433 * A356054 A045434 A166567

Adjacent sequences: A216532 A216533 A216534 * A216536 A216537 A216538

Keyword

nonn

Author

V. Raman, Sep 08 2012

Status

approved