The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A196686 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
newer changes | Showing entries 11-20 | older changes

A196686

Number of odd digits of Pi minus number of even digits.
(history; published version)

#19 by Jean-François Alcover at Tue Jun 02 06:40:21 EDT 2015

STATUS

proposed

reviewed

#18 by Michel Marcus at Tue Jun 02 03:09:25 EDT 2015

STATUS

editing

proposed

#17 by Michel Marcus at Tue Jun 02 03:09:12 EDT 2015

MATHEMATICA

rd=RealDigits[N[Pi, 10000]][[1]]; a=0; s=Reap[Do[a=a+2Mod[rd[[n]], 2]-1; Sow[{n, a}], {n, 10000}]][[2, 1]]; (* this gives b-file *) (* _Moshe Levin, _, Oct 05 2011 *)

STATUS

approved

editing

#16 by Joerg Arndt at Sun Dec 14 06:14:29 EST 2014

STATUS

proposed

approved

#15 by Jon E. Schoenfield at Sun Dec 14 06:09:07 EST 2014

STATUS

editing

proposed

#14 by Jon E. Schoenfield at Sun Dec 14 06:09:05 EST 2014

COMMENTS

Cumulative sum of A030657 with zeroes zeros replaced by "-1".

STATUS

approved

editing

#13 by R. J. Mathar at Tue Jul 10 11:25:46 EDT 2012

STATUS

editing

approved

#12 by R. J. Mathar at Tue Jul 10 11:23:59 EDT 2012

CROSSREFS

Cf. A030657, A175792.

STATUS

approved

editing

#11 by Russ Cox at Sat Mar 31 10:31:24 EDT 2012

AUTHOR

_Moshe Levin (moshe.levin(AT)mail.ru), _, Oct 05 2011

Discussion

Sat Mar 31

10:31

OEIS Server: https://oeis.org/edit/global/717

#10 by T. D. Noe at Wed Oct 05 15:07:57 EDT 2011

STATUS

editing

approved