A249103 Decimal expansion of (Pi^2/15)^(1/3).

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

Offset: 0

Author

Stanislav Sykora, Oct 21 2014

Keywords

• nonn
• cons
• easy

Comments

In physics, ratio of the dimensionless blackbody radiation constant alpha_R to the dimensionless fine structure constant alpha.

Examples

			0.869766805311485826280210982972921098290240169355453980758171740...
		

Links

• Stanislav Sykora, Table of n, a(n) for n = 0..2000
• Ke Xiao, Dimensionless Constants and Blackbody Radiation Laws, Electronic Journal of Theoretical Physics, 8(2011), 379-388, Eq.4.
• Index entries for transcendental numbers

Crossrefs

Cf. A000796, A005600, A013661, A013662, A182448.

Programs

Mathematica

RealDigits[(Pi^2/15)^(1/3),10,120][[1]] (* Vaclav Kotesovec, Oct 22 2014 *)

PARI

(Pi^2/15)^(1/3)

Formula

Equals A182448^(1/3).