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A065451 a(n) = Fibonacci(phi(n)). 5
0, 1, 1, 1, 1, 3, 1, 8, 3, 8, 3, 55, 3, 144, 8, 21, 21, 987, 8, 2584, 21, 144, 55, 17711, 21, 6765, 144, 2584, 144, 317811, 21, 832040, 987, 6765, 987, 46368, 144, 14930352, 2584, 46368, 987, 102334155, 144, 267914296, 6765, 46368, 17711, 1836311903 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

LINKS

Harry J. Smith, Table of n, a(n) for n = 0..1000

Joseph L. Pe, The Euler Phibonacci Sequence: A Problem Proposal with Software

FORMULA

a(n) = A000045(A000010(n)).

EXAMPLE

a(13) = F(phi(13)) = F(12) = 144.

MATHEMATICA

Table[ Fibonacci[ EulerPhi[ n]], {n, 0, 60} ]

PROG

(PARI) for(n=1, 75, print1(fibonacci(eulerphi(n)), ", "))

(PARI) { for (n=0, 1000, if (n, a=fibonacci(eulerphi(n)), a=0); write("b065451.txt", n, " ", a) ) } \\ Harry J. Smith, Oct 20 2009

(MAGMA) [0] cat [Fibonacci(EulerPhi(n)): n in [1..50]]; // G. C. Greubel, Jan 18 2018

CROSSREFS

Cf. A065449 (phi(Fibonacci(n))).

Sequence in context: A322428 A130300 A308742 * A178148 A245180 A054506

Adjacent sequences:  A065448 A065449 A065450 * A065452 A065453 A065454

KEYWORD

nonn

AUTHOR

Joseph L. Pe, Nov 18 2001

EXTENSIONS

More terms from several correspondents, Nov 19 2001

STATUS

approved

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Last modified December 8 18:37 EST 2019. Contains 329865 sequences. (Running on oeis4.)