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A074699 a(n) = tau(Fibonacci(24*2^n))/(24*2^n) where tau(x) is the number of divisors of x (A000005(x)). 0
3, 7, 32, 144, 5120, 180224, 3145728, 3489660928 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Are terms always integers?

LINKS

Table of n, a(n) for n=0..7.

MAPLE

with(numtheory): with(combinat): a:=n->tau(fibonacci(24*2^n))/(24*2^n): seq(a(n), n=0..4); # Emeric Deutsch, Jan 30 2006

MATHEMATICA

Table[DivisorSigma[0, Fibonacci[24 2^n]] / (24 2^n), {n, 0, 5}] (* Vincenzo Librandi, Sep 11 2017 *)

PROG

(PARI) a(n) = numdiv(fibonacci(24*2^n))/(24*2^n); \\ Michel Marcus, Sep 10 2017

(MAGMA) [NumberOfDivisors(Fibonacci(24*2^n))/(24*2^n): n in [0..5]]; // Vincenzo Librandi, Sep 11 2017

CROSSREFS

Cf. A063375, A074698.

Sequence in context: A249761 A163081 A096239 * A115088 A089622 A241147

Adjacent sequences:  A074696 A074697 A074698 * A074700 A074701 A074702

KEYWORD

more,nonn

AUTHOR

Benoit Cloitre, Sep 03 2002

EXTENSIONS

a(5) from Eric Rowland, Jun 18 2017

a(6)-a(7) from Amiram Eldar, Sep 03 2019 (using FactorDB)

STATUS

approved

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Last modified September 18 12:37 EDT 2019. Contains 327170 sequences. (Running on oeis4.)