A344149 - OEIS

%I #10 Nov 12 2022 20:37:56

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

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

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

%N Decimal expansion of 30+5*sqrt(3)+3*sqrt(25+10*sqrt(5)).

%C Decimal expansion of the surface area of a rhombicosidodecahedron with unit edge length.

%C Apart from the first digit the same as A179451. - _R. J. Mathar_, May 16 2021

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

%e 59.305982844911989540745375436192677...

%t RealDigits[N[30 + 5*Sqrt[3] + 3*Sqrt[25 + 10*Sqrt[5]], 100]][[1]] (* _Wesley Ivan Hurt_, Nov 12 2022 *)

%o (Magma) SetDefaultRealField(RealField(200)); 30+5*Sqrt(3)+3*Sqrt(25+10*Sqrt(5));

%Y Cf. A185093 (rhombicosidodecahedron volume).

%K nonn,cons

%O 2,1

%A _Wesley Ivan Hurt_, May 10 2021