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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A046387 Products of 5 distinct primes. 12
2310, 2730, 3570, 3990, 4290, 4830, 5610, 6006, 6090, 6270, 6510, 6630, 7410, 7590, 7770, 7854, 8610, 8778, 8970, 9030, 9282, 9570, 9690, 9870, 10010, 10230, 10374, 10626, 11130, 11310, 11730, 12090, 12210, 12390, 12558, 12810, 13090, 13110 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Subsequence of A051270. 4620 = 2^2*3*5*7*11 is in A051270 but not in here, for example. - R. J. Mathar, Nov 10 2014

LINKS

T. D. Noe, Table of n, a(n) for n=1..10000

EXAMPLE

a(1) = 2310 = 2 * 3 * 5 * 7 * 11 = A002110(5) = 5#.

a(2) = 2730 = 2 * 3 * 5 * 7 * 13.

a(3) = 3570 = 2 * 3 * 5 * 7 * 17.

a(10) = 6006 = 2 * 3 * 7 * 11 * 13.

MATHEMATICA

f5Q[n_]:=Last/@FactorInteger[n]=={1, 1, 1, 1, 1}; lst={}; Do[If[f5Q[n], AppendTo[lst, n]], {n, 8!}]; lst [From Vladimir Joseph Stephan Orlovsky, Aug 26 2008]

CROSSREFS

Cf. A067885 (product of 6 distinct primes)

Cf. A000040, A000961, A001221, A005117, A000977, A002110, A006881, A007304, A007774, A033992, A033993, A046386.

Cf. A014614, A046403, A051270.

Sequence in context: A247839 A060231 A051270 * A136154 A076252 A147572

Adjacent sequences:  A046384 A046385 A046386 * A046388 A046389 A046390

KEYWORD

easy,nonn

AUTHOR

Patrick De Geest, Jun 15 1998.

EXTENSIONS

Entry revised by N. J. A. Sloane, Apr 10 2006

STATUS

approved

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

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

Last modified November 24 16:41 EST 2014. Contains 249899 sequences.