OFFSET
1,2
COMMENTS
Sequence with a(1) = 2 is the decimal expansion of sqrt(4 + sqrt(4 + sqrt(4 + sqrt(4 + ... )))) = - A222132.
This is the positive root of the minimal polynomial x^2 + x - 4, with negative root -A222132. - Wolfdieter Lang, Dec 10 2022
FORMULA
EXAMPLE
1.561552812808830274910704...
MATHEMATICA
RealDigits[(Sqrt[17] - 1)/2, 10, 130]
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Jaroslav Krizek, Feb 08 2013
STATUS
approved