The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A160899 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A160899

a(n) = the smallest positive multiple of n that has exactly a prime number of 1's in its binary representation.
(history; published version)

#11 by Harvey P. Dale at Sun Apr 03 15:47:25 EDT 2022

STATUS

editing

approved

#10 by Harvey P. Dale at Sun Apr 03 15:47:22 EDT 2022

LINKS

Harvey P. Dale, <a href="/A160899/b160899.txt">Table of n, a(n) for n = 1..1000</a>

STATUS

approved

editing

#9 by Harvey P. Dale at Sun Apr 03 15:45:57 EDT 2022

STATUS

editing

approved

#8 by Harvey P. Dale at Sun Apr 03 15:45:55 EDT 2022

MATHEMATICA

spm[n_]:=Module[{k=1}, While[!PrimeQ[DigitCount[k*n, 2, 1]], k++]; k*n]; Array[ spm, 70] (* Harvey P. Dale, Apr 03 2022 *)

STATUS

approved

editing

#7 by Charles R Greathouse IV at Tue Mar 11 01:32:31 EDT 2014

AUTHOR

__Leroy Quet__, , May 29 2009

Discussion

Tue Mar 11

01:32

OEIS Server: https://oeis.org/edit/global/2122

#6 by N. J. A. Sloane at Wed Feb 05 20:18:57 EST 2014

AUTHOR

__Leroy Quet_, _, May 29 2009

Discussion

Wed Feb 05

20:18

OEIS Server: https://oeis.org/edit/global/2118

#5 by N. J. A. Sloane at Wed Feb 05 20:12:02 EST 2014

AUTHOR

_Leroy Quet, _, May 29 2009

Discussion

Wed Feb 05

20:12

OEIS Server: https://oeis.org/edit/global/2117

#4 by Russ Cox at Fri Mar 30 17:29:59 EDT 2012

EXTENSIONS

Extended by _Ray Chandler (rayjchandler(AT)sbcglobal.net), _, Jun 14 2009

Discussion

Fri Mar 30

17:29

OEIS Server: https://oeis.org/edit/global/154

#3 by N. J. A. Sloane at Sat Oct 02 03:00:00 EDT 2010

KEYWORD

base,nonn,new

AUTHOR

Leroy Quet (http://www.prism-of-spirals.net/), , May 29 2009

#2 by N. J. A. Sloane at Sun Jul 11 03:00:00 EDT 2010

KEYWORD

base,nonn,new

AUTHOR

Leroy Quet (q1qq2qqq3qqqq(AT)yahoohttp://www.prism-of-spirals.comnet/), May 29 2009