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Template:Sequence of the Day for March 26
From OeisWiki
Intended for: March 26, 2013
Timetable
- First draft entered by Daniel Forgues and Alonso del Arte on February 2, 2013 ✓
- Draft reviewed by Daniel Forgues on February 4, 2013 ✓, March 26, 2014 ✓, March 25, 2018 ✓
- Draft to be approved by February 26, 2013
Yesterday's SOTD * Tomorrow's SOTD |
The line below marks the end of the <noinclude> ... </noinclude> section.
pi |
- ∞
∑ i = 1⎛ ⎝ ( 1 +∑ ij = 1⌊ log10 pj ⌋)=⎞ ⎠ ∞∑ i = 1i +⎛ ⎝ ∑ ij = 1⌊ log10 pj ⌋,⎞ ⎠
or
- ∞
∑ i = 1⎛ ⎝ ∑ ij = 1⌈ log10 ( 1 + pj )⌉,⎞ ⎠
giving
- 0.23571113171923293137...
In 1946, A. H. Copeland and Paul Erdős proved that this is a normal number.
March 26, 2013 marks the 100 th anniversary of the birth of Paul Erdős.
See A191232 for the binary expansion of the “binary” Copeland–Erdős constant.