A019691 Decimal expansion of Pi/24.

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

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Comments

With a different offset, also decimal expansion of 5*Pi/12, 25*Pi/6 or 125*Pi/3. - Michel Marcus, Sep 09 2013

Volume of a quarter sphere of diameter 1. - Omar E. Pol, Aug 19 2019

Examples

			0.13089969389957471826927680763664595350821539164062940920728935801282...
		

Links

• Ivan Panchenko, Table of n, a(n) for n = 0..1000
• Index entries for transcendental numbers

Crossrefs

Cf. A000796, A019670, A019673, A019675, A019679.

Programs

Mathematica

RealDigits[N[Pi/24,6! ]] (* Vladimir Joseph Stephan Orlovsky, Dec 02 2009 *)

PARI

Pi/24 \\ Charles R Greathouse IV, Sep 09 2013

Formula

Equals A019673/4 or A019675/3 or A019679/2. - Omar E. Pol, Aug 19 2019

Equals (1/10) * Sum_{k>=1} sin(k*Pi/6)/k. - Amiram Eldar, May 30 2021