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A179592 Decimal expansion of the circumradius of pentagonal cupola with edge length 1. 4
2, 2, 3, 2, 9, 5, 0, 5, 0, 9, 4, 1, 5, 6, 9, 0, 0, 4, 9, 5, 0, 0, 4, 1, 5, 3, 8, 3, 2, 4, 9, 6, 8, 2, 7, 7, 2, 9, 3, 4, 0, 8, 0, 7, 3, 0, 5, 7, 9, 1, 8, 1, 6, 4, 7, 4, 5, 7, 4, 4, 1, 2, 6, 0, 8, 2, 5, 5, 6, 5, 8, 9, 4, 9, 0, 1, 6, 4, 3, 8, 2, 8, 9, 6, 2, 4, 5, 1, 9, 5, 0, 6, 0, 9, 2, 7, 3, 7, 3, 8, 5, 6, 4, 7, 4 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Pentagonal cupola: 15 vertices, 25 edges, and 12 faces.

LINKS

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

Wolfram Alpha, Johnson solid 5

FORMULA

Digits of sqrt(11+4*sqrt(5))/2.

EXAMPLE

2.232950509415690049500415383249682772934080730579181647457441260...

MATHEMATICA

RealDigits[N[Sqrt[11+4*Sqrt[5]]/2, 200]]

CROSSREFS

Cf. A001622, A010527, A102208, A179290, A179292, A179294, A179449, A179450, A179451, A179452, A179552, A179553, A019881, A179587, A179588, A179589, A179590, A179591.

Sequence in context: A016001 A016012 A069138 * A058671 A016002 A098189

Adjacent sequences:  A179589 A179590 A179591 * A179593 A179594 A179595

KEYWORD

nonn,cons,easy

AUTHOR

Vladimir Joseph Stephan Orlovsky, Jul 19 2010

STATUS

approved

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Last modified February 19 20:17 EST 2019. Contains 320328 sequences. (Running on oeis4.)