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A216571 Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + 6*b^2. 0
4, 11, 313, 4787, 10691, 12251, 14449, 35449, 36779, 44507, 51169, 56003, 148091, 193201, 202667, 387433, 616787, 692147 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

Blair Kelly, Factorizations of Fibonacci and Lucas numbers

CROSSREFS

Cf. A000032, A001606.

Sequence in context: A092658 A304888 A316572 * A299046 A113314 A180057

Adjacent sequences:  A216568 A216569 A216570 * A216572 A216573 A216574

KEYWORD

nonn

AUTHOR

V. Raman, Sep 08 2012

STATUS

approved

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Last modified October 16 03:37 EDT 2019. Contains 328040 sequences. (Running on oeis4.)