A152627 Decimal expansion of 3/4.

7, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

Offset

0,1

Comments

This is also the expected distance from a randomly selected point in the unit sphere to its center. - Derek Orr, Jul 27 2014

Links

Table of n, a(n) for n=0..98.

Formula

Equals (sin(Pi/3))^2. - Michel Marcus, Sep 12 2020

Equals Sum_{k>=1} (zeta(2*k) - 1). - Amiram Eldar, May 24 2021

Example

0.75000000000000000000000000000000000000000000000000000000000...

Mathematica

RealDigits[3/4, 10, 128][[1]] (* Alonso del Arte, Feb 16 2015 *)

Crossrefs

Cf. A019670 (Pi/3).

Sequence in context: A241359 A239602 A100976 * A277067 A354823 A241902

Adjacent sequences: A152624 A152625 A152626 * A152628 A152629 A152630

Keyword

nonn,cons,easy

Author

N. J. A. Sloane, Oct 30 2009

Status

approved