A179592 Decimal expansion of the circumradius of pentagonal cupola with edge length 1.

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

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