A273637 Decimal expansion of ((Pi*(3+sqrt(5))^2)/(60*sqrt(3)))^(1/3), the sphericity of the icosahedron.

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

Offset: 0

Author

Felix Fröhlich, May 27 2016

Keywords

• nonn
• cons

Examples

			0.93932565156763615941610143241466136614288864170479161093295918...
		

Links

• Wikipedia, Sphericity.
• Index entries for transcendental numbers

Crossrefs

Cf. A273633, A273634, A273635, A273636.

Programs

Mathematica

RealDigits[Surd[(Pi (3+Sqrt[5])^2)/(60Sqrt[3]),3],10,120][[1]] (* Harvey P. Dale, Nov 16 2022 *)

PARI

default(realprecision, 50080); my(x=((Pi*(3+sqrt(5))^2)/(60*sqrt(3)))^(1/3)); for(k=1, 100, my(d=floor(x)); x=(x-d)*10; print1(d, ", "))