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 A195706 Decimal expansion of arccos(-sqrt(3/8)). 4
 2, 2, 2, 9, 8, 5, 4, 3, 6, 2, 6, 2, 1, 3, 0, 5, 6, 0, 2, 1, 0, 4, 1, 5, 3, 8, 1, 8, 9, 6, 2, 7, 7, 1, 6, 7, 7, 0, 2, 1, 7, 8, 0, 1, 8, 2, 9, 8, 2, 9, 1, 0, 2, 6, 8, 9, 1, 4, 2, 4, 6, 5, 5, 4, 8, 6, 0, 5, 7, 4, 7, 7, 4, 4, 7, 4, 1, 4, 6, 1, 3, 7, 7, 6, 5, 1, 5, 1, 7, 4, 7, 8, 9, 2, 5, 8, 0, 5, 0, 0 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS G. C. Greubel, Table of n, a(n) for n = 1..10000 FORMULA Equals Pi - arcsin(sqrt(5/2)/2) = Pi - arctan(sqrt(5/3)). - Amiram Eldar, Jul 09 2023 EXAMPLE arccos(-sqrt(3/8)) = 2.2298543626213056... MATHEMATICA r = Sqrt[3/8]; N[ArcCos[-r], 100] RealDigits[%] PROG (PARI) acos(-sqrt(3/8)) \\ G. C. Greubel, Aug 19 2018 (Magma) SetDefaultRealField(RealField(100)); Arccos(-Sqrt(3/8)); // G. C. Greubel, Aug 19 2018 CROSSREFS Cf. A195700. Sequence in context: A260324 A157649 A155695 * A091185 A324956 A268081 Adjacent sequences: A195703 A195704 A195705 * A195707 A195708 A195709 KEYWORD nonn,cons AUTHOR Clark Kimberling, Sep 23 2011 STATUS approved

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)