Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A114840
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A114840 Indices of Fibonacci numbers with 5 distinct prime factors. +0
1
30, 36, 42, 44, 45, 50, 57, 63, 66, 68, 69, 75, 76, 98, 111, 118, 124, 134, 141, 153, 169, 172, 183, 185, 201, 202, 203, 213, 218, 229, 247, 253, 267, 302, 303, 329, 335, 347, 363, 371, 373, 377, 381, 382, 386, 395, 398, 413, 415, 439, 443, 461, 497, 501, 529 (list; graph; listen)
OFFSET

1,1

LINKS

Blair Kelly, Fibonacci and Lucas Factorizations.

EXAMPLE

a(1)=30 because 30th fibonacci number consists of 5 distinct prime factors (i.e. 832040 = 2^3 x 5 x 11 x 31 x 61)

PROGRAM

(PARI) n=1; while(n<305, if(omega(fibonacci(n))==5, print1(n, ", ")); n++)

CROSSREFS

Adjacent sequences: A114837 A114838 A114839 this_sequence A114841 A114842 A114843

Sequence in context: A061842 A109226 A138689 this_sequence A109426 A051657 A130038

KEYWORD

nonn

AUTHOR

Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 19 2006

EXTENSIONS

More terms from Ryan Propper (rpropper(AT)stanford.edu), Apr 26 2006

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


AT&T Labs Research