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 A273637 Decimal expansion of ((Pi*(3+sqrt(5))^2)/(60*sqrt(3)))^(1/3), the sphericity of the icosahedron. 4

%I

%S 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,

%T 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,

%U 7,3,7,9,0,3,3,9,5,2,4,5,3,9,5,2,5,3

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

%H Wikipedia, <a href="http://en.wikipedia.org/wiki/Sphericity">Sphericity</a>.

%e 0.93932565156763615941610143241466136614288864170479161093295918...

%o (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, ", "))

%Y Cf. A273633, A273634, A273635, A273636.

%K nonn,cons

%O 0,1

%A _Felix FrÃ¶hlich_, May 27 2016

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Last modified May 27 06:24 EDT 2019. Contains 323599 sequences. (Running on oeis4.)