A179449 Decimal expansion of the volume of great icosahedron with edge length 1.

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

Offset: 1

Author

Vladimir Joseph Stephan Orlovsky, Jul 14 2010

Keywords

• nonn
• cons
• easy

Comments

Great icosahedron: 20 faces, 12 vertices, and 30 edges.

Examples

			0.31830500937508762649617763802863490189974235016186428155379281441228294...
		

Links

• Eric Weisstein's World of Mathematics, Great Icosahedron
• Wikipedia, Great Icosahedron
• Index entries for algebraic numbers, degree 2

Crossrefs

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

Programs

Mathematica

RealDigits[N[5*(Sqrt[5]-3)/12, 105]][[1]]

Formula

Digits of 5/12 * (3-sqrt(5)).

Extensions

Partially rewritten by Charles R Greathouse IV, Feb 02 2011