A289503 Decimal expansion of 3/sqrt(Pi).

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

Offset

1,2

References

R. K. Guy, Unsolved Problems in Number Theory, Springer, 1st edition, 1981. See section E10.

Links

Table of n, a(n) for n=1..88.

Steven R. Finch, Mean width of a regular simplex, arxiv:1111.4976 [math.MG], (2016), mu_3.

Index entries for transcendental numbers.

Formula

Equals 3*A087197.

Example

1.6925687506432688608442383546823177...

Maple

3/sqrt(Pi); evalf(%) ;

Mathematica

First[RealDigits[3/Sqrt[Pi], 10, 100]] (* Paolo Xausa, Apr 29 2024 *)

Prog

(Python)
from mpmath import mp, sqrt, pi
mp.dps=90
print([int(z) for z in list(str(3/sqrt(pi)).replace('.', '')[:-2])]) # Indranil Ghosh, Jul 08 2017
(PARI) 3/sqrt(Pi) \\ Charles R Greathouse IV, Oct 01 2022

Crossrefs

Cf. A087197 (1/sqrt(Pi)).

Sequence in context: A161480 A309819 A309825 * A349522 A254135 A198676

Adjacent sequences: A289500 A289501 A289502 * A289504 A289505 A289506

Keyword

nonn,cons,easy

Author

R. J. Mathar, Jul 07 2017

Status

approved