cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A179451 Decimal expansion of the surface area of an icosidodecahedron with side length 1.

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%I A179451 #9 Oct 30 2023 01:54:46
%S A179451 2,9,3,0,5,9,8,2,8,4,4,9,1,1,9,8,9,5,4,0,7,4,5,3,7,5,4,3,6,1,9,2,6,7,
%T A179451 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 A179451 0,9,2,9,9,1,0,5,1,5,9,4,9,6,1,3,9,5,0,2,5,8,3,0,4,3,7,2,9,5,7,6,4,3,0,4,6
%N A179451 Decimal expansion of the surface area of an icosidodecahedron with side length 1.
%C A179451 Icosidodecahedron: 32 faces, 30 vertices, and 60 edges.
%H A179451 <a href="/index/Al#algebraic_08">Index entries for algebraic numbers, degree 8</a>
%F A179451 Sqrt(30*(10+3*sqrt(5)+sqrt(75+30*sqrt(5))))
%e A179451 29.3059828449119895407453754361926770276025163091742830907641713815460...
%t A179451 RealDigits[N[Sqrt[30*(10+3*Sqrt[5]+Sqrt[75+30*Sqrt[5]])],200]]
%o A179451 (PARI) polrootsreal(x^8 - 1200*x^6 + 324000*x^4 - 27000000*x^2 + 324000000)[8] \\ _Charles R Greathouse IV_, Oct 30 2023
%Y A179451 Cf. A010527, A102208, A179290, A179292, A179294, A179449, A179450.
%K A179451 nonn,cons,easy
%O A179451 2,1
%A A179451 _Vladimir Joseph Stephan Orlovsky_, Jul 14 2010
%E A179451 Partially rewritten by _Charles R Greathouse IV_, Feb 03 2011