OFFSET
1,1
COMMENTS
Log(Pi^(3/2)) = 1.5*log(Pi) = 1.5 * A053510 = 1.7170948...
LINKS
Marc Chamberland and Armin Straub, On gamma quotients and infinite products, Advances in Applied Mathematics, Vol. 51, No. 5 (2013), pp. 546-562, see pp. 555-556; arXiv preprint, arXiv:1309.3455 [math.NT], 2013, see pp. 9-10.
FORMULA
From Vaclav Kotesovec, Dec 10 2015: (Start)
Equals Gamma(3/14)*Gamma(5/14)*Gamma(13/14)/2.
Equals Gamma(1/14)*Gamma(9/14)*Gamma(11/14)/4.
(End)
Equals Integral_{x=-oo..oo, y=-oo..oo, z=-oo..oo} exp(-x^2 - y^2 - z^2) dx dy dz. - Ilya Gutkovskiy, Apr 10 2024
EXAMPLE
5.5683279968317078452848179..
MAPLE
Pi^(3/2) ; evalf(%) ;
MATHEMATICA
RealDigits[Pi^(3/2), 10, 120][[1]] (* Amiram Eldar, Jun 13 2023 *)
CROSSREFS
KEYWORD
AUTHOR
R. J. Mathar, May 25 2010
STATUS
approved