This site is supported by donations to The OEIS Foundation.

Template:Sequence of the Day for August 19

From OeisWiki
Jump to: navigation, search


Intended for: August 19, 2013

Timetable

  • First draft entered by Alonso del Arte on April 7, 2012
  • Draft reviewed by Daniel Forgues on August 18, 2016
  • Draft approved by July 19, 2013
Yesterday's SOTD * Tomorrow's SOTD

The line below marks the end of the <noinclude> ... </noinclude> section.



A065474: Decimal expansion of the Feller–Tornier constant

i   = 1
(1  −  2 / pi 2 )
, where
pi
is the
i
th prime.
0.322634098939...

This number is the density of squarefree numbers such that their successors are also squarefree (see A007674).