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 A300690 Decimal expansion of sqrt(Pi^2/8 - 1). 4
 4, 8, 3, 4, 2, 5, 8, 4, 7, 6, 0, 8, 6, 7, 9, 0, 9, 9, 0, 1, 3, 7, 3, 2, 6, 3, 7, 0, 6, 3, 9, 3, 1, 7, 0, 2, 2, 3, 2, 8, 0, 1, 7, 2, 7, 6, 6, 5, 1, 4, 5, 9, 9, 4, 8, 6, 9, 3, 4, 5, 7, 2, 4, 6, 1, 7, 4, 7, 3, 1, 3, 8, 1, 6, 4, 0, 8, 0, 1, 6, 6, 1, 5, 0, 2, 8, 7, 2, 5, 3, 3, 3, 6, 4, 5, 5, 2, 0, 4, 5, 1, 0, 0 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Also the total harmonic distortion (THD) of a square wave, see formula (11) in the Blagouchine & Moreau link. LINKS I. V. Blagouchine and E. Moreau, Analytic Method for the Computation of the Total Harmonic Distortion by the Cauchy Method of Residues. IEEE Trans. Commun., vol. 59, no. 9, pp. 2478-2491, 2011. PDF file. EXAMPLE 0.4834258476086790990137326370639317022328017276651459... MAPLE evalf(sqrt((1/8)*Pi^2-1), 120) MATHEMATICA RealDigits[Sqrt[Pi^2/8 - 1], 10, 120][[1]] PROG (PARI) default(realprecision, 120); sqrt(Pi^2/8-1) (MATLAB) format long; sqrt(pi^2/8-1) CROSSREFS Cf. A002388, A111003, A300713, A300714, A300727, A300731. Sequence in context: A019698 A132797 A217602 * A193077 A271871 A204993 Adjacent sequences:  A300687 A300688 A300689 * A300691 A300692 A300693 KEYWORD nonn,cons AUTHOR Iaroslav V. Blagouchine, Mar 11 2018 STATUS approved

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Last modified November 17 14:18 EST 2018. Contains 317276 sequences. (Running on oeis4.)