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A179449 Decimal expansion of the volume of great icosahedron with edge length 1. 19
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 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

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

LINKS

Table of n, a(n) for n=1..105.

Eric Weisstein's World of Mathematics, Great Icosahedron

Wikipedia, Great Icosahedron

FORMULA

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

EXAMPLE

0.31830500937508762649617763802863490189974235016186428155379281441228294...

MATHEMATICA

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

CROSSREFS

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

Sequence in context: A273927 A293975 A185452 * A049541 A249757 A207609

Adjacent sequences:  A179446 A179447 A179448 * A179450 A179451 A179452

KEYWORD

nonn,cons,easy

AUTHOR

Vladimir Joseph Stephan Orlovsky, Jul 14 2010

EXTENSIONS

Partially rewritten by Charles R Greathouse IV, Feb 02 2011.

STATUS

approved

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Last modified November 12 16:45 EST 2019. Contains 329058 sequences. (Running on oeis4.)