OFFSET
2,2
COMMENTS
Decimal expansion of continued fraction [14; 14, 14, 14, ...].
Also largest solution of x^2 - 14 x - 1 = 0.
LINKS
Michael Penn, 7+5√2 is a perfect cube??, YouTube video, 2022.
Wikipedia, Metallic mean.
FORMULA
EXAMPLE
14.0710678118654752440084436210484903928483593...
MATHEMATICA
RealDigits[7 + 5*Sqrt[2], 10, 100][[1]] (* Amiram Eldar, Feb 24 2022 *)
PROG
(PARI) (1+sqrt(2))^3
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
A.H.M. Smeets, Feb 24 2022
STATUS
approved