Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A160233
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A160233 n is a member of A002183 but 2n is not +0
1
1280, 1600, 4800, 28672, 131072, 688128, 6881280, 7864320, 39321600, 43253760, 94371840, 201326592, 528482304, 9663676416, 115964116992, 241591910400, 265751101440, 347892350976, 811748818944, 3522410053632, 4174708211712 (list; graph; listen)
OFFSET

1,1

EXAMPLE

1280 qualifies because 1280 is a member of A002183 but 1280*2=2560 is not.

MATHEMATICA

(* capture the terms in the b002183.txt file: "Number of divisors of n-th highly composite number" and assign it to the variable 's' *) Select[ Take[s, 964], !MemberQ[s, 2 # ] &] [From Robert G. Wilson v (rgwv(AT)rgwv.com), May 09 2009]

CROSSREFS

A002183

Sequence in context: A038652 A152507 A031798 this_sequence A090006 A084803 A104399

Adjacent sequences: A160230 A160231 A160232 this_sequence A160234 A160235 A160236

KEYWORD

hard,nonn

AUTHOR

J. Lowell (jhbubby(AT)mindspring.com), May 04 2009

EXTENSIONS

More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), May 09 2009

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 December 15 00:47 EST 2009. Contains 170825 sequences.


AT&T Labs Research