The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A039343 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A039343

Numbers whose base-8 representation has the same nonzero number of 2's and 4's.
(history; published version)

#15 by Joerg Arndt at Tue Jun 29 02:23:12 EDT 2021

STATUS

proposed

approved

#14 by Michel Marcus at Mon Jun 28 23:37:54 EDT 2021

STATUS

editing

proposed

#13 by Michel Marcus at Mon Jun 28 23:37:52 EDT 2021

CROSSREFS

Cf. A007094.

STATUS

proposed

editing

#12 by Jon E. Schoenfield at Mon Jun 28 23:35:35 EDT 2021

STATUS

editing

proposed

#11 by Jon E. Schoenfield at Mon Jun 28 23:35:33 EDT 2021

NAME

Numbers n such that whose base-8 representation in base 8 has the same nonzero number of 2's and 4's.

STATUS

approved

editing

#10 by Charles R Greathouse IV at Thu Nov 21 12:46:45 EST 2013

MATHEMATICA

Select[Range[700], DigitCount[#, 8, 2]==DigitCount[#, 8, 4]>0&] (* From _Harvey P. Dale, _, Oct 10 2011 *)

Discussion

Thu Nov 21

12:46

OEIS Server: https://oeis.org/edit/global/2062

#9 by Russ Cox at Fri Mar 30 17:20:53 EDT 2012

AUTHOR

Olivier Gerard (olivier.gerard(AT)gmail.com)

Olivier Gérard

Discussion

Fri Mar 30

17:20

OEIS Server: https://oeis.org/edit/global/117

#8 by Harvey P. Dale at Mon Oct 10 16:26:55 EDT 2011

STATUS

editing

approved

#7 by Harvey P. Dale at Mon Oct 10 16:26:51 EDT 2011

MATHEMATICA

Select[Range[700], DigitCount[#, 8, 2]==DigitCount[#, 8, 4]>0&] (* From Harvey P. Dale, Oct 10 2011 *)

STATUS

approved

editing

#6 by N. J. A. Sloane at Fri Jan 09 03:00:00 EST 2009

KEYWORD

nonn,base,easy,new

AUTHOR

Olivier Gerard (ogerardolivier.gerard(AT)ext.jussieugmail.frcom)