The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 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 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: A163081 A332386 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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified February 7 22:58 EST 2023. Contains 360132 sequences. (Running on oeis4.)