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A243711 Decimal expansion of the fraction of the full solid angle subtended by an equilateral spherical triangle with a side length of 1 radian. 2
0, 3, 9, 4, 3, 8, 1, 8, 8, 7, 1, 3, 5, 8, 6, 4, 8, 1, 2, 0, 5, 1, 5, 1, 7, 8, 5, 7, 3, 8, 9, 1, 9, 0, 5, 6, 3, 7, 7, 3, 8, 2, 8, 9, 2, 5, 2, 4, 2, 8, 8, 6, 2, 7, 2, 3, 7, 1, 4, 7, 5, 1, 6, 4, 9, 1, 8, 7, 0, 5, 1, 5, 5, 9, 9, 6, 1, 3, 8, 1, 2, 2, 5, 5, 5, 9, 4, 0, 9, 1, 9, 1, 2, 5, 4, 4, 1, 6, 6, 7, 9, 5, 4, 1, 4, 8 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Same quantity as in A243710, but expressed as a fraction of the full solid angle of 4*Pi.

LINKS

Stanislav Sykora, Table of n, a(n) for n = 0..2001

FORMULA

Equals A243710/(4*Pi).

EXAMPLE

0.0394381887135864812051517857389190563773828925242886272371475...,

PROG

(PARI) atan(sqrt(tan(3/4)*tan(1/4)^3))/Pi

CROSSREFS

Cf. A243710.

Sequence in context: A264992 A050000 A154368 * A247553 A161773 A212992

Adjacent sequences:  A243708 A243709 A243710 * A243712 A243713 A243714

KEYWORD

nonn,cons,easy

AUTHOR

Stanislav Sykora, Jun 08 2014

STATUS

approved

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Last modified August 18 21:39 EDT 2017. Contains 290768 sequences.