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 A093066 Decimal expansion of (4 + 17*sqrt(2) - 6*sqrt(3) - 7*Pi + 21*log(1+sqrt(2)) + 42*log(2+sqrt(3)))/75. 1
 9, 2, 6, 3, 9, 0, 0, 5, 5, 1, 7, 4, 0, 4, 6, 7, 2, 9, 2, 1, 8, 1, 6, 3, 5, 8, 6, 5, 4, 7, 7, 7, 9, 0, 1, 4, 4, 4, 4, 9, 6, 0, 1, 9, 0, 1, 0, 7, 3, 3, 5, 0, 4, 6, 7, 3, 2, 5, 2, 1, 9, 2, 1, 2, 7, 1, 4, 1, 8, 5, 0, 4, 5, 9, 4, 0, 3, 6, 6, 8, 3, 8, 2, 9, 3, 1, 3, 4, 7, 3, 0, 7, 5, 3, 4, 9, 9, 6, 8, 2, 1, 2 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Average distance between two points chosen at random on two different faces of a unit cube. LINKS G. C. Greubel, Table of n, a(n) for n = 0..10000 D. H. Bailey, J. M. Borwein, V. Kapoor and E. Weisstein, Ten Problems in Experimental Mathematics Eric Weisstein's World of Mathematics, Cube Line Picking EXAMPLE 0.926390055... MATHEMATICA RealDigits[(4 + 17*Sqrt[2] - 6*Sqrt[3] - 7*Pi + 21*Log[1 + Sqrt[2]] + 42*Log[2 + Sqrt[3]])/75, 10, 10001][[1]] (* G. C. Greubel, Oct 01 2018 *) PROG (PARI) default(realprecision, 100); (4 + 17*sqrt(2) - 6*sqrt(3) - 7*Pi + 21*log(1 + sqrt(2)) + 42*log(2 + sqrt(3)))/75 \\ G. C. Greubel, Oct 01 2018 (MAGMA) SetDefaultRealField(RealField(100)); R:= RealField(); (4 + 17*Sqrt(2) - 6*Sqrt(3) - 7*Pi(R) + 21*Log(1 + Sqrt(2)) + 42*Log(2 + Sqrt(3)))/75; // G. C. Greubel, Oct 01 2018 CROSSREFS Cf. A073012. Sequence in context: A021112 A248318 A298852 * A155168 A239628 A160262 Adjacent sequences:  A093063 A093064 A093065 * A093067 A093068 A093069 KEYWORD nonn,cons AUTHOR Eric W. Weisstein, Mar 16 2004 STATUS approved

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Last modified September 21 07:28 EDT 2021. Contains 347596 sequences. (Running on oeis4.)