A094883 Decimal expansion of sqrt(2)/phi, where phi = (1+sqrt(5))/2.

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

Offset

0,1

Comments

An algebraic integer with minimal polynomial x^4 - 6*x^2 + 4. - Charles R Greathouse IV, Mar 25 2014

References

Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 3.16 Turan's power sums constants, p. 246.

Links

Ivan Panchenko, Table of n, a(n) for n = 0..1000

Example

0.874032048897642...

Mathematica

RealDigits[Sqrt[2]/GoldenRatio, 10, 100][[1]] (* G. C. Greubel, Aug 17 2018 *)

Prog

(PARI) sqrt(3-sqrt(5)) \\ Charles R Greathouse IV, Mar 25 2014
(Magma) SetDefaultRealField(RealField(100)); 2*Sqrt(2)/(1 + Sqrt(5)); // G. C. Greubel, Aug 17 2018

Crossrefs

Sequence in context: A198561 A086253 A225119 * A131081 A326919 A158288

Adjacent sequences: A094880 A094881 A094882 * A094884 A094885 A094886

Keyword

cons,nonn

Author

N. J. A. Sloane, Jun 15 2004

Status

approved