A179450 Decimal expansion of the volume of an icosidodecahedron with edge length 1.

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

Offset

2,2

Comments

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

Links

Table of n, a(n) for n=2..106.

Index entries for algebraic numbers, degree 2

Formula

(45 + 17*sqrt(5))/6.

Example

13.83552593624940413982599206140528266708175201889932288543420886199647...

Mathematica

RealDigits[N[(45+17*Sqrt[5])/6, 200]]

Prog

(PARI) (45 + 17*sqrt(5))/6 \\ Charles R Greathouse IV, Oct 30 2023

Crossrefs

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

Sequence in context: A198489 A334503 A015136 * A333287 A360199 A360851

Adjacent sequences: A179447 A179448 A179449 * A179451 A179452 A179453

Keyword

nonn,cons,easy

Author

Vladimir Joseph Stephan Orlovsky, Jul 14 2010

Extensions

Partially rewritten by Charles R Greathouse IV, Feb 03 2011

Status

approved