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A249103 Decimal expansion of (Pi^2/15)^(1/3). 2
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 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

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

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.

FORMULA

Equals A182448^(1/3).

EXAMPLE

0.869766805311485826280210982972921098290240169355453980758171740...

MATHEMATICA

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

PROG

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

CROSSREFS

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

Sequence in context: A256686 A160056 A155680 * A116517 A081544 A104668

Adjacent sequences:  A249100 A249101 A249102 * A249104 A249105 A249106

KEYWORD

nonn,cons,easy

AUTHOR

Stanislav Sykora, Oct 21 2014

STATUS

approved

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Last modified May 26 03:22 EDT 2017. Contains 287073 sequences.