The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A019916

(Bold, blue-underlined text is an ; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

Decimal expansion of tan(Pi/10) (angle of 18 degrees).
(history; published version)

#37 by Charles R Greathouse IV at Tue Feb 04 15:21:56 EST 2025

STATUS

editing

#36 by Charles R Greathouse IV at Tue Feb 04 15:21:53 EST 2025

LINKS

PROG

STATUS

approved

#35 by Michael De Vlieger at Sun Mar 24 09:57:54 EDT 2024

STATUS

reviewed

#34 by Hugo Pfoertner at Sun Mar 24 08:12:09 EDT 2024

STATUS

proposed

#33 by Michel Marcus at Sun Mar 24 07:30:45 EDT 2024

STATUS

editing

#32 by Michel Marcus at Sun Mar 24 07:30:42 EDT 2024

FORMULA

Equals Product_{k>=0} ((5*k + 1)/(5*k + 4))^(-1)^(k) = Product_{k>=0} A090771(k)/A090773(k). - __Antonio Graciá Llorente_, Mar 24 2024

STATUS

proposed

#31 by Antonio Graciá Llorente at Sun Mar 24 07:20:04 EDT 2024

STATUS

editing

#30 by Antonio Graciá Llorente at Sun Mar 24 07:19:57 EDT 2024

FORMULA

STATUS

approved

#29 by Charles R Greathouse IV at Mon May 13 11:57:32 EDT 2019

STATUS

editing

#28 by Charles R Greathouse IV at Mon May 13 11:57:24 EDT 2019

COMMENTS

EXAMPLE

0.3249196962329063261558714122151344649549034715214751003078047191366729009...

STATUS

approved