A177347 Decimal expansion of (5+sqrt(85))/10.

1, 4, 2, 1, 9, 5, 4, 4, 4, 5, 7, 2, 9, 2, 8, 8, 7, 3, 1, 0, 0, 0, 2, 2, 7, 4, 2, 8, 1, 7, 6, 2, 7, 9, 3, 1, 5, 7, 2, 4, 6, 8, 0, 5, 0, 4, 8, 7, 2, 2, 4, 6, 4, 0, 0, 8, 0, 0, 7, 7, 5, 2, 2, 0, 5, 4, 4, 2, 6, 7, 1, 0, 2, 6, 8, 0, 1, 8, 7, 5, 4, 6, 0, 7, 6, 7, 8, 9, 4, 0, 9, 0, 7, 9, 3, 2, 8, 0, 5, 6, 4, 9, 4, 0, 3

Offset

1,2

Comments

Continued fraction expansion of (5+sqrt(85))/10 is A130196.

Links

Table of n, a(n) for n=1..105.

Index entries for algebraic numbers, degree 2.

Formula

Minimal polynomial: 5*x^2 - 5*x - 3. - Amiram Eldar, Apr 01 2026

Example

1.42195444572928873100022742817627931572468050487224...

Mathematica

RealDigits[(5+Sqrt[85])/10, 10, 120][[1]] (* Harvey P. Dale, Dec 31 2011 *)

Crossrefs

Cf. A010536 (decimal expansion of sqrt(85)), A130196 (repeat 1, 2, 2).

Sequence in context: A010310 A021241 A016691 * A101020 A160905 A208612

Adjacent sequences: A177344 A177345 A177346 * A177348 A177349 A177350

Keyword

cons,nonn

Author

Klaus Brockhaus, May 07 2010

Status

approved