login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

Decimal expansion of 3*Pi/5.
5

%I #19 Jul 16 2024 10:27:37

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

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

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

%N Decimal expansion of 3*Pi/5.

%C With offset 2, decimal expansion of 6*Pi.

%C 6*Pi is also the surface area of a sphere whose diameter equals the square root of 6. More generally x*Pi is also the surface area of a sphere whose diameter equals the square root of x. - _Omar E. Pol_, Dec 22 2013

%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>

%F Equals 1/(10*A374172). - _Hugo Pfoertner_, Jul 16 2024

%e 3*Pi/5 = 1.8849555921538759430775860299677017305183...

%e 6*Pi = 18.849555921538759430775860299677017305183...

%t First[RealDigits[6*Pi, 10, 100]] (* _Paolo Xausa_, Jul 16 2024 *)

%o (PARI) .6*Pi \\ _Charles R Greathouse IV_, Sep 30 2022

%Y Cf. A000796, A019692, A122952, A019694, A019669 (Pi through 5*Pi).

%Y Cf. A374172.

%K nonn,cons

%O 1,2

%A _Omar E. Pol_, Oct 03 2013