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A103736 Fibonacci numbers with nonprime indices. 0
0, 1, 3, 8, 21, 34, 55, 144, 377, 610, 987, 2584, 6765, 10946, 17711, 46368, 75025, 121393, 196418, 317811, 832040, 2178309, 3524578, 5702887, 9227465, 14930352, 39088169, 63245986, 102334155, 267914296, 701408733, 1134903170, 1836311903 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..32.

EXAMPLE

55 is included because 55 is the 10th Fibonacci number and 10 is composite.

MAPLE

with(combinat): a:=proc(n) if isprime(n)=false then fibonacci(n) else fi end: seq(a(n), n=0..52); # Emeric Deutsch, Oct 04 2005

MATHEMATICA

Fibonacci /@ Select[Range[0, 46], ! PrimeQ[ # ] &] (* Robert G. Wilson v *)

Module[{nn=50, ix}, ix=Table[If[PrimeQ[n], 0, 1], {n, 0, nn}]; Pick[Fibonacci[ Range[ 0, nn]], ix, 1]] (* Harvey P. Dale, Apr 26 2018 *)

CROSSREFS

Cf. A000045, A018252, A090206.

Sequence in context: A046815 A203848 A160404 * A172243 A101332 A007773

Adjacent sequences: A103733 A103734 A103735 * A103737 A103738 A103739

KEYWORD

nonn

AUTHOR

Leroy Quet, Oct 01 2005

EXTENSIONS

More terms from Robert G. Wilson v and Emeric Deutsch, Oct 04 2005

STATUS

approved

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Last modified December 3 11:24 EST 2022. Contains 358517 sequences. (Running on oeis4.)