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 A130204 Decimal expansion of the mean distance between two points picked at random in a quarter-disk. 1
 4, 7, 3, 8, 7, 7, 2, 6, 2, 2, 4, 2, 3, 2, 5, 8, 2, 9, 7, 9, 7, 9, 2, 8, 1, 5, 8, 7, 4, 1, 4, 3, 9, 7, 9, 1, 1, 1, 7, 3, 4, 7, 0, 8, 9, 6, 4, 4, 3, 0, 9, 6, 8, 4, 3, 9, 2, 2, 4, 1, 1, 2, 7, 3, 0, 7, 7, 0, 9, 4, 2, 2, 0, 9, 8, 7, 0, 2, 7, 7, 4, 6, 1, 6, 8, 3, 7, 7, 3, 0, 2, 4, 4, 2, 3, 8, 3, 9, 0, 2, 7, 4, 0, 1, 3 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Eric Weisstein's World of Mathematics, CircularSectorLinePicking FORMULA Equals (32*(3 - 94*sqrt(2) + 48*Pi + 6*log(-2 + 2*sqrt(2))))/(135*Pi^2). EXAMPLE 0.47387726224232582979... CROSSREFS Cf. A093070, A130203. Sequence in context: A190357 A199446 A100127 * A021215 A063378 A280547 Adjacent sequences:  A130201 A130202 A130203 * A130205 A130206 A130207 KEYWORD nonn,cons AUTHOR Eric W. Weisstein, May 16 2007 STATUS approved

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