OFFSET
1,5
COMMENTS
Has a nice (non-simple) continued fraction due to Ramanujan.
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Ramanujan Continued Fractions
FORMULA
Equals 1/A091667.
EXAMPLE
1.00186743...
MATHEMATICA
RealDigits[(1 +Sqrt[5] +Sqrt[2*(5 +Sqrt[5])])/(2*Exp[(2*Pi)/5]), 10, 100][[1]] (* G. C. Greubel, Sep 27 2018 *)
PROG
(PARI) default(realprecision, 100); (1 +sqrt(5) +sqrt(2*(5 +sqrt(5))))/( 2*exp((2*Pi)/5)) \\ G. C. Greubel, Sep 27 2018
(Magma) SetDefaultRealField(RealField(100)); R:= RealField(); (1 +Sqrt(5) +Sqrt(2*(5 +Sqrt(5))))/(2*Exp((2*Pi(R))/5)); // G. C. Greubel, Sep 27 2018
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Eric W. Weisstein, Feb 09 2004
EXTENSIONS
Offset corrected by R. J. Mathar, Feb 05 2009
STATUS
approved