A176519 Decimal expansion of (9+sqrt(87))/2.

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

Offset

1,1

Comments

Continued fraction expansion of (9+sqrt(87))/2 is A010725 preceded by 9.

Links

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

Index entries for algebraic numbers, degree 2.

Formula

Minimal polynomial: 2*x^2 - 18*x - 3. - Amiram Eldar, May 01 2026

Example

9.16368952654440752277723777116027849163812034709582...

Mathematica

RealDigits[(9+Sqrt[87])/2, 10, 120][[1]] (* Harvey P. Dale, Jan 29 2023 *)

Prog

(PARI) (sqrt(87)+9)/2 \\ Charles R Greathouse IV, Apr 25 2016

Crossrefs

Cf. A010538 (decimal expansion of sqrt(87)), A010725 (repeat 6, 9).

Sequence in context: A229156 A016579 A154011 * A010535 A154902 A160042

Adjacent sequences: A176516 A176517 A176518 * A176520 A176521 A176522

Keyword

cons,nonn

Author

Klaus Brockhaus, Apr 23 2010

Status

approved