Template:Sequence of the Day for August 19

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

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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).