login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A046391 Odd numbers with exactly 5 distinct prime factors. 4
15015, 19635, 21945, 23205, 25935, 26565, 31395, 33495, 33915, 35805, 36465, 39585, 40755, 41055, 42315, 42735, 45885, 47355, 49335, 49665, 50505, 51051, 51765, 53295, 54285, 55335, 55965, 57057, 57855, 58695, 61215, 61845, 62205 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

LINKS

T. D. Noe, Table of n, a(n) for n=1..1000

EXAMPLE

50505 = 3 * 5 * 7 * 13 * 37.

MATHEMATICA

f[n_]:=Last/@FactorInteger[n]=={1, 1, 1, 1, 1}&&FactorInteger[n][[1, 1]]>2; lst={}; Do[If[f[n], AppendTo[lst, n]], {n, 9!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Nov 23 2009]

CROSSREFS

Cf. A046318, A046407.

Sequence in context: A081635 A165614 A104875 * A112643 A129485 A133778

Adjacent sequences:  A046388 A046389 A046390 * A046392 A046393 A046394

KEYWORD

nonn

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 15 1998.

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 06:27 EST 2012. Contains 205998 sequences.