A212952 - OEIS

A212952

Decimal expansion of 3*sqrt(3)/16.

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

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OFFSET

0,1

COMMENTS

Decimal expansion of constant arising in analysis of classical atom in an expanding universe.

A quadratic number with denominator 16 and minimal polynomial 256*x^2 - 27. - Charles R Greathouse IV, Apr 21 2016

LINKS

Table of n, a(n) for n=0..99.

W. B. Bonnor, Size of a hydrogen atom in the expanding universe, Class. Quantum Grav. 16(1999), p. 1313.

Richard H. Price and Joseph D. Romano, In an expanding universe, what doesn't expand?, arXiv:gr-qc/0508052, 2005-2012; American Journal of Physics, May 2012, Volume 80, Issue 5, pp. 37.

Index entries for algebraic numbers, degree 2

EXAMPLE

0.3247595264....

MATHEMATICA

RealDigits[(3Sqrt[3])/16, 10, 120][[1]] (* Harvey P. Dale, Sep 22 2023 *)

PROG

(PARI) sqrt(27)/16 \\ Charles R Greathouse IV, Apr 21 2016

CROSSREFS

Sequence in context: A163329 A362978 A261147 * A246259 A105025 A129594

Adjacent sequences: A212949 A212950 A212951 * A212953 A212954 A212955

KEYWORD

nonn,easy,cons

AUTHOR

Jonathan Vos Post, Jun 01 2012

STATUS

approved