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A277062 Number of primes <= n-th Lucas number. 3
1, 0, 2, 2, 4, 5, 7, 10, 15, 21, 30, 46, 66, 98, 146, 218, 329, 500, 757, 1158, 1766, 2716, 4164, 6420, 9907, 15320, 23760, 36878, 57356, 89288, 139283, 217506, 340059, 532321, 834147, 1308186, 2053958, 3227229, 5075229, 7987852, 12581575, 19831014 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..41.

MAPLE

a:= n-> numtheory[pi]((<<0|1>, <1|1>>^n. <<2, 1>>)[1$2]):

seq(a(n), n=0..35);  # Alois P. Heinz, Nov 09 2016

MATHEMATICA

Table[PrimePi[LucasL[n]], {n, 0, 50}]

PROG

(MAGMA) [#PrimesUpTo(Lucas(n)): n in [0..41]];

CROSSREFS

Cf. A000032, A054782.

Sequence in context: A241391 A241736 A034398 * A027069 A238494 A319160

Adjacent sequences:  A277059 A277060 A277061 * A277063 A277064 A277065

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Nov 09 2016

STATUS

approved

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Last modified November 19 02:01 EST 2018. Contains 317332 sequences. (Running on oeis4.)