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

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, 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, 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

Offset: 2

Author

Vladimir Joseph Stephan Orlovsky, Jul 14 2010

Keywords

• nonn
• cons
• easy

Comments

Icosidodecahedron: 32 faces, 30 vertices, and 60 edges.

Examples

			29.3059828449119895407453754361926770276025163091742830907641713815460...
		

Links

• Index entries for algebraic numbers, degree 8

Crossrefs

Cf. A010527, A102208, A179290, A179292, A179294, A179449, A179450.

Programs

Mathematica

RealDigits[N[Sqrt[30*(10+3*Sqrt[5]+Sqrt[75+30*Sqrt[5]])],200]]

PARI

polrootsreal(x^8 - 1200*x^6 + 324000*x^4 - 27000000*x^2 + 324000000)[8] \\ Charles R Greathouse IV, Oct 30 2023

Formula

Sqrt(30*(10+3*sqrt(5)+sqrt(75+30*sqrt(5))))

Extensions

Partially rewritten by Charles R Greathouse IV, Feb 03 2011