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

0,1

Links

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

Wikipedia, Sphericity.

Index entries for transcendental numbers

Example

0.93932565156763615941610143241466136614288864170479161093295918...

Mathematica

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

Prog

(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, ", "))

Crossrefs

Cf. A273633, A273634, A273635, A273636.

Sequence in context: A155166 A159467 A198608 * A086705 A199866 A276558

Adjacent sequences: A273634 A273635 A273636 * A273638 A273639 A273640

Keyword

nonn,cons

Author

Felix Fröhlich, May 27 2016

Status

approved