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 A140457 Decimal expansion of surface area of unit elongated dodecahedron. 0
 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 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 2,2 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 Table of n, a(n) for n=2..124. Eric W. Weisstein, Elongated Dodecahedron. FORMULA 2*sqrt(3)*(3 + sqrt(5)) = A010469*(1+A098317). EXAMPLE 18.138271537828097532.... MATHEMATICA RealDigits[2*Sqrt[3]*(3+Sqrt[5]), 10, 130][[1]] (* Harvey P. Dale, Nov 26 2011 *) CROSSREFS Sequence in context: A127454 A093602 A011469 * A358286 A176457 A110194 Adjacent sequences: A140454 A140455 A140456 * A140458 A140459 A140460 KEYWORD cons,easy,nonn AUTHOR Jonathan Vos Post, Jun 26 2008 EXTENSIONS Corrected offset. Added more digits R. J. Mathar, Jan 26 2009 STATUS approved

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Last modified September 21 17:55 EDT 2023. Contains 365503 sequences. (Running on oeis4.)