cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A114819 Indices of Fibonacci numbers with 10 prime factors when counted with multiplicity.

Original entry on oeis.org

36, 100, 114, 165, 174, 256, 266, 273, 282, 296, 304, 322, 325, 366, 369, 376, 406, 424, 428, 429, 484, 494, 506, 574, 578, 589, 633, 637, 642, 646, 652, 658, 663, 664, 668, 669, 670, 687, 705, 716, 724, 742, 754, 779, 782, 807, 845, 892, 909, 921, 946, 956
Offset: 1

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Author

Shyam Sunder Gupta, Feb 19 2006

Keywords

Examples

			a(1)=36 because the 36th Fibonacci number (i.e., 14930352) consists of 10 prime factors (i.e., 2*2*2*2*3*3*3*17*19*107).
		

Crossrefs

Column k=10 of A303215.

Programs

  • Mathematica
    t = {}; Do[f = FactorInteger[Fibonacci[n]]; If[Total[Transpose[f][[2]]] == 10, AppendTo[t, n]], {n, 2, 200}]; t (* T. D. Noe, Mar 14 2014 *)
    Select[Range[1000],PrimeOmega[Fibonacci[#]]==10&] (* Harvey P. Dale, Jul 24 2021 *)
  • PARI
    n=1;while(n<305,if(bigomega(fibonacci(n))==10,print1(n,", "));n++)

Extensions

More terms from Ryan Propper, May 24 2006