A179641 Decimal expansion of the volume of pentagonal dipyramid with edge length 1.

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

Offset: 0

Author

Vladimir Joseph Stephan Orlovsky, Jul 21 2010

Keywords

• cons
• nonn
• easy

Comments

Pentagonal dipyramid: 7 vertices, 15 edges, and 10 faces.

Examples

			0.60300566479164914136743113906093968628671819663429381035590810378421...
		

Links

• Wolfram Alpha, Johnson solid 13

Crossrefs

Cf. A001622, A010527, A102208, A179290, A179292, A179294, A179449-A179452, A179552-A179554, A179587-A179593, A179637-A179640.

Programs

Mathematica

RealDigits[N[(5+Sqrt[5])/12,200]]

PARI

(sqrt(5)+5)/12 \\ Charles R Greathouse IV, Apr 25 2016

Formula

Digits of (5+sqrt(5))/12.

Extensions

Offset corrected by R. J. Mathar, Aug 15 2010