Template:Sequence of the Day for June 19

Intended for: June 19, 2013

Timetable

• First draft entered by Alonso del Arte on March 28, 2012 ✓
• Draft reviewed by Daniel Forgues on May 30, 2012 ✓
• Draft to be approved by May 19, 2013

Yesterday's SOTD * Tomorrow's SOTD

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A137245: Decimal expansion of

∑ ∞ i  = 1   1 pi log pi

, where

pi

is the

i

 th prime.

1.63661632335...

Daniel Forgues wonders if it’s a coincidence or not that this number is close to

1 + 2 π = 1.636619772367581...

(see A060294 for Buffon’s constant

2 π

).