A140457 Decimal expansion of surface area of unit elongated dodecahedron.

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

Offset: 2

Author

Jonathan Vos Post, Jun 26 2008

Keywords

• cons
• easy
• nonn

Examples

			18.138271537828097532....
		

References

• Coxeter, H. S. M. Regular Polytopes, 3rd ed. New York: Dover, 1973.
• Fedorov, E. S. "Elemente der Gestaltenlehre." Mineralogicheskoe obshchestvo Leningrad (Verhandlungen der Russisch-Kaiserlichen Mineralogischen Gesellschaft zu St. Petersburg 21, 1-279, 1885.
• Tutton, A. E. H. Crystallography and Practical Crystal Measurement. London, pp. 567 (Fig. 448) and 723 (Fig. 585), 1922.

Links

• Eric W. Weisstein, Elongated Dodecahedron.

Programs

Mathematica

RealDigits[2*Sqrt[3]*(3+Sqrt[5]),10,130][[1]] (* Harvey P. Dale, Nov 26 2011 *)

Formula

2*sqrt(3)*(3 + sqrt(5)) = A010469*(1+A098317).

Extensions

Corrected offset. Added more digits R. J. Mathar, Jan 26 2009