OFFSET
1,2
COMMENTS
This is an integer in Q(sqrt(5)). - Wolfdieter Lang, Jan 07 2018
LINKS
Ivan Panchenko, Table of n, a(n) for n = 1..1000
FORMULA
(3-phi)^2 = 5/phi^2 = 10 - 5*phi.
Smaller root of x^2 - 15x + 25 = 0.
Equals 10*A187798-5. - R. J. Mathar, Feb 08 2023
EXAMPLE
1.909830...
MATHEMATICA
RealDigits[(3-GoldenRatio)^2, 10, 120][[1]] (* Harvey P. Dale, Jun 30 2017 *)
PROG
(PARI) (15-5*sqrt(5))/2 \\ Charles R Greathouse IV, Aug 31 2013
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Joost Gielen, Aug 30 2013
EXTENSIONS
Corrected and extended by Charles R Greathouse IV, Aug 31 2013
STATUS
approved