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 A087478 Decimal expansion of (Sqrt[20467] - Sqrt[19578] + Sqrt[10177] - Sqrt[9553])/2. 1
 3, 1, 4, 1, 5, 9, 2, 6, 5, 1, 8, 3, 2, 9, 0, 0, 5, 6, 2, 8, 7, 8, 6, 7, 4, 4, 8, 2, 8, 8, 3, 4, 3, 3, 3, 7, 1, 6, 7, 7, 5, 1, 1, 5, 3, 3, 4, 0, 2, 8, 2, 2, 3, 0, 8, 4, 5, 8, 1, 0, 7, 6, 3, 3, 2, 8, 5, 5, 1, 0, 7, 3, 1, 3, 8, 4, 0, 9, 6, 5, 9, 5, 4, 9, 4, 3, 7, 6, 1, 4, 8, 7, 4, 9, 9, 1, 2, 1, 9, 7 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This is the best approximation to Pi using four square roots (with coefficients +/-1) of n < 200000, see also A087477. LINKS CROSSREFS Cf. A000796, A087477. Sequence in context: A152040 A013705 A216548 * A112602 A000796 A212131 Adjacent sequences:  A087475 A087476 A087477 * A087479 A087480 A087481 KEYWORD easy,nonn,cons AUTHOR Zak Seidov, Sep 09 2003 STATUS approved

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Last modified June 19 07:39 EDT 2013. Contains 226399 sequences.