A273636 Decimal expansion of ((Pi*(15+7*sqrt(5))^2)/(12*(25+10*sqrt(5))^(3/2)))^(1/3), the sphericity of the dodecahedron.

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

Offset

0,1

Links

Table of n, a(n) for n=0..85.

Wikipedia, Sphericity.

Index entries for transcendental numbers.

Example

0.91045318140924227916953803446625862857458658029433801265061554...

Mathematica

RealDigits[((Pi*(15 + 7*Sqrt[5])^2)/(12*(25 + 10*Sqrt[5])^(3/2)))^(1/3), 10, 120][[1]] (* Amiram Eldar, Jun 29 2023 *)

Prog

(PARI) default(realprecision, 50080); my(x=((Pi*(15+7*sqrt(5))^2)/(12*(25+10*sqrt(5))^(3/2)))^(1/3)); for(k=1, 100, my(d=floor(x)); x=(x-d)*10; print1(d, ", "))

Crossrefs

Cf. A273633, A273634, A273635, A273637.

Sequence in context: A121935 A070060 A329085 * A248414 A176980 A227817

Adjacent sequences: A273633 A273634 A273635 * A273637 A273638 A273639

Keyword

nonn,cons

Author

Felix Fröhlich, May 27 2016

Status

approved