A118309 - OEIS

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A118309

Decimal expansion of (1/2)*(-9*sqrt(3) + 5*Pi).

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

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OFFSET

0,2

COMMENTS

The area enclosed by the inner loop of the curve Cayley's sextic whose equation in polar coordinates is r(theta) = 4*cos(theta/3)^3. - Amiram Eldar, Jun 13 2023

LINKS

Table of n, a(n) for n=0..104.

Eric Weisstein's World of Mathematics, Cayley's Sextic.

Wikipedia, Cayley's sextic.

Index entries for transcendental numbers.

EXAMPLE

0.05975299991453527528...

MATHEMATICA

RealDigits[(5*Pi - 9*Sqrt[3])/2, 10, 120, -1][[1]] (* Amiram Eldar, Jun 13 2023 *)

PROG

(PARI) 5*Pi - 9*sqrt(3)/2 \\ Charles R Greathouse IV, Oct 01 2022

CROSSREFS