OFFSET
0,1
COMMENTS
Solution to the Kakeya needle problem.
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..10000
Vincent Borrelli, Jean-Luc Rullière, En cheminant avec Kakeya, Voyage au cœur des mathématiques, ENS Éditions, Lyon 2014 (in French) (see p. 119).
Eric Weisstein's World of Mathematics, Kakeya Needle Problem
EXAMPLE
0.284258224...
MATHEMATICA
RealDigits[((5-2*Sqrt[2])*Pi)/24, 10, 120][[1]] (* Harvey P. Dale, Sep 27 2015 *)
PROG
(PARI) ((5 - 2*sqrt(2))*Pi)/24 \\ Michel Marcus, Sep 22 2014
(Magma) SetDefaultRealField(RealField(100)); R:= RealField(); ((5-2*Sqrt(2))*Pi(R))/24; // G. C. Greubel, Oct 01 2018
CROSSREFS
KEYWORD
AUTHOR
Eric W. Weisstein, Apr 16 2004
STATUS
approved