A019704 - OEIS

This site is supported by donations to The OEIS Foundation.

A019704

Decimal expansion of sqrt(Pi)/2.

8, 8, 6, 2, 2, 6, 9, 2, 5, 4, 5, 2, 7, 5, 8, 0, 1, 3, 6, 4, 9, 0, 8, 3, 7, 4, 1, 6, 7, 0, 5, 7, 2, 5, 9, 1, 3, 9, 8, 7, 7, 4, 7, 2, 8, 0, 6, 1, 1, 9, 3, 5, 6, 4, 1, 0, 6, 9, 0, 3, 8, 9, 4, 9, 2, 6, 4, 5, 5, 6, 4, 2, 2, 9, 5, 5, 1, 6, 0, 9, 0, 6, 8, 7, 4, 7, 5, 3, 2, 8, 3, 6, 9, 2, 7, 2, 3, 3, 2 (list; constant; graph; refs; listen; history; text; internal format)

	OFFSET	`0,1`
	REFERENCES	`C. C. Clawson, The Beauty and Magic of Numbers. New York: Plenum Press (1996): 210.`
	LINKS	`Ivan Panchenko, Table of n, a(n) for n = 0..1000` `Index to sequences related to the Gamma function`
	FORMULA	`(1/2)! = Gamma(3/2) = sqrt(Pi)/2. - Benoit Cloitre, Apr 24 2003` `Equals integral_{0, infinity} exp(-x^2) dx, or integral_{0, infinity} exp(-(x - 1/x)^2) dx, or also integral_{0, 1} sqrt(log(1/x)) dx. [Jean-François Alcover, Mar 28 2013]` `Equals sqrt(A003881). - Michel Marcus, Aug 31 2014`
	EXAMPLE	`sqrt(Pi)/2 = 0.886226925452758013649...`
	MATHEMATICA	`RealDigits[Sqrt[Pi]/2, 10, 100][[1]] (* Alonso del Arte, Aug 15 2012 *)`
	CROSSREFS	`Cf. A003881.` `Sequence in context: A153619 A202497 A195708 * A140976 A253270 A021057` `Adjacent sequences: A019701 A019702 A019703 * A019705 A019706 A019707`
	KEYWORD	`nonn,cons`
	AUTHOR	`N. J. A. Sloane.`
	STATUS	`approved`

Content is available under The OEIS End-User License Agreement .

Last modified September 10 21:05 EDT 2015. Contains 261502 sequences.