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 A179553 Decimal expansion of the surface area of pentagonal pyramid with edge length 1. 11
 3, 8, 8, 5, 5, 4, 0, 9, 1, 0, 0, 5, 0, 0, 6, 3, 5, 3, 9, 6, 6, 8, 3, 1, 9, 9, 0, 4, 2, 7, 0, 9, 5, 0, 0, 5, 8, 0, 8, 5, 8, 8, 0, 7, 3, 7, 2, 7, 3, 1, 7, 4, 1, 1, 4, 2, 7, 6, 8, 5, 3, 4, 3, 1, 3, 3, 8, 7, 8, 5, 2, 6, 3, 3, 4, 4, 9, 6, 6, 2, 7, 7, 6, 8, 3, 8, 7, 3, 9, 7, 4, 8, 3, 4, 1, 4, 8, 4, 6, 0, 0, 8, 8, 4, 0 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Pentagonal pyramid: 6 faces, 6 vertices, and 10 edges. LINKS Wolfram Alpha, Johnson solid 2 FORMULA Digits of sqrt(5/2*(10+sqrt(5)+sqrt(75+30sqrt(5))))/2. EXAMPLE 3.885540910050063539668319904270950058085880737273174114276853431338785... MATHEMATICA RealDigits[N[Sqrt[5/2*(10+Sqrt[5]+Sqrt[75+30*Sqrt[5]])]/2, 200]] CROSSREFS Cf. A001622, A010527, A102208, A179290, A179292, A179294, A179449, A179450, A179451, A179452, A179552. Sequence in context: A019744 A102639 A118817 * A157471 A131596 A140975 Adjacent sequences:  A179550 A179551 A179552 * A179554 A179555 A179556 KEYWORD nonn,cons,easy AUTHOR Vladimir Joseph Stephan Orlovsky, Jul 19 2010 STATUS approved

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