A176052 Decimal expansion of (5+sqrt(35))/5.

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

Offset

1,1

Comments

Continued fraction expansion of (5+sqrt(35))/5 is A010695.

Links

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

Index entries for algebraic numbers, degree 2.

Formula

Minimal polynomial: 5*x^2 - 10*x - 2. - Amiram Eldar, Apr 01 2026

Example

2.18321595661992320851346565831232340968310024615886...

Mathematica

RealDigits[(5 + Sqrt[35])/5, 10, 120][[1]] (* Amiram Eldar, Apr 01 2026 *)

Crossrefs

Cf. A010490 (decimal expansion of sqrt(35)), A010695 (repeat 2, 5).

Sequence in context: A065826 A286899 A123235 * A351560 A140273 A378807

Adjacent sequences: A176049 A176050 A176051 * A176053 A176054 A176055

Keyword

cons,nonn

Author

Klaus Brockhaus, Apr 07 2010

Status

approved