OFFSET
1,1
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..10000
FORMULA
Equals A010474 plus 4. - R. J. Mathar, Sep 17 2008
Equals Sum_{i>=1} i/sqrt(2)^i. - Christoph B. Kassir, Aug 30 2021
EXAMPLE
8.242640687119285146405...
MATHEMATICA
RealDigits[4 + 3*Sqrt[2], 10, 100][[1]] (* G. C. Greubel, Sep 11 2018 *)
PROG
(PARI) default(realprecision, 100); 4 + 3*sqrt(2) \\ G. C. Greubel, Sep 11 2018
(Magma) SetDefaultRealField(RealField(100)); 4 + 3*Sqrt(2); // G. C. Greubel, Sep 11 2018
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
Benoit Cloitre, Jun 15 2003
STATUS
approved