This site is supported by donations to The OEIS Foundation.

Template:Sequence of the Day for June 20

From OeisWiki
Jump to: navigation, search

Intended for: June 20, 2013

Timetable

  • First draft entered by Alonso del Arte on November 20, 2012
  • Draft reviewed by April 20, 2013
  • Draft approved by May 20, 2013
Yesterday's SOTD * Tomorrow's SOTD

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



A010527: Decimal expansion of
2  3
2
.
{ 0.8660254037844... }

This is the sine of 60°, or the cosine of 30°. But it is also the imaginary part of a complex cubic root of  − 1, for, as you can verify,

1
2
+   
2  −3
2
 3 = e
i π
3
 3 = −1.