OFFSET
1,1
COMMENTS
Asymptotic constant in the expected perimeter of square point picking.
REFERENCES
Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 8.1 Geometric Probability Constants, p. 481.
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Square Point Picking
EXAMPLE
4.247296545963878651221513149595788524022238578931556848162...
MATHEMATICA
RealDigits[(4*Sqrt[2]*Pi^2)/Gamma[1/4]^2, 10, 100][[1]] (* G. C. Greubel, Sep 27 2018 *)
PROG
(PARI) (4*sqrt(2)*Pi^2)/gamma(1/4)^2 \\ Michel Marcus, Jun 26 2014
(Magma) SetDefaultRealField(RealField(100)); R:= RealField(); 4*Sqrt(2)*Pi(R)^2/Gamma(1/4)^2; // G. C. Greubel, Sep 27 2018
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Eric W. Weisstein, Jul 21 2004
STATUS
approved