A114818 Indices of Fibonacci numbers with 9 prime factors when counted with multiplicity.

24, 80, 88, 110, 112, 184, 186, 189, 196, 225, 232, 243, 246, 248, 255, 268, 272, 275, 284, 286, 295, 328, 333, 357, 370, 412, 418, 425, 435, 477, 539, 556, 559, 561, 575, 591, 602, 603, 604, 625, 628, 629, 639, 689, 692, 695, 712, 717, 722, 747, 763, 764

Offset

1,1

Links

Amiram Eldar, Table of n, a(n) for n = 1..85

Blair Kelly, Fibonacci and Lucas Factorizations.

Example

a(1)=24 because the 54th Fibonacci number (i.e., 46368) consists of 9 prime factors (i.e., 2*2*2*2*2*3*3*7*23).

Mathematica

t = {}; Do[f = FactorInteger[Fibonacci[n]]; If[Total[Transpose[f][[2]]] == 9, AppendTo[t, n]], {n, 2, 200}]; t (* T. D. Noe, Mar 14 2014 *)

Prog

(PARI) n=1; while(n<330, if(bigomega(fibonacci(n))==9, print1(n, ", ")); n++)

Crossrefs

Column k=9 of A303215.

Sequence in context: A124140 A206003 A143839 * A190102 A060673 A167561

Adjacent sequences: A114815 A114816 A114817 * A114819 A114820 A114821

Keyword

nonn

Author

Shyam Sunder Gupta, Feb 19 2006

Extensions

More terms from Ryan Propper, May 24 2006

Status

approved