// y-cruncher Custom Formula File // // This can be loaded directly from the Custom Compute menu or // entered from the command line as "custom:filename.cfg". // y-cruncher custom custom:"filename.cfg" // // // Author: Alexander J. Yee // Date: October 2, 2018 // // Value = 0.91596559417721901505460351493238411077414937428167... // // Formula: G. Huvent (2006) // // 3 inf ( 1 ( 2 2 1 )) // Catalan = --- SUM (-------- (---------- - ---------- + ----------)) // 4 k=0 ( (-4)^k ( (4k+1)^2 (4k+2)^2 (4k+3)^2 )) // // 1 inf ( 1 ( 8 4 1 )) // - ---- SUM (--------- (---------- + ---------- + ----------)) // 32 k=0 ( (-64)^k ( (4k+1)^2 (4k+2)^2 (4k+3)^2 )) // // http://functions.wolfram.com/Constants/Catalan/06/01/0007/ // { NameShort : "Catalan" NameLong : "Catalan's Constant" AlgorithmShort : "Huvent (original)" AlgorithmLong : "Huvent (2006) (original)" Formula : { LinearCombination : [ [-1 {SeriesBinaryBBP : { CoefficientP : 1 CoefficientQ : 0 CoefficientD : 1 Alternating : "true" PowerCoef : -2 PowerShift : 1 PolynomialP : [3] PolynomialQ : [9 -24 16] }}] [1 {SeriesBinaryBBP : { CoefficientP : 1 CoefficientQ : 0 CoefficientD : 1 Alternating : "true" PowerCoef : -2 PowerShift : 0 PolynomialP : [3] PolynomialQ : [2 -8 8] }}] [-1 {SeriesBinaryBBP : { CoefficientP : 1 CoefficientQ : 0 CoefficientD : 1 Alternating : "true" PowerCoef : -2 PowerShift : 0 PolynomialP : [3] PolynomialQ : [1 -8 16] }}] [1 {SeriesBinaryBBP : { CoefficientP : 1 CoefficientQ : 0 CoefficientD : 1 Alternating : "true" PowerCoef : -6 PowerShift : 4 PolynomialP : [1] PolynomialQ : [9 -24 16] }}] [1 {SeriesBinaryBBP : { CoefficientP : 1 CoefficientQ : 0 CoefficientD : 1 Alternating : "true" PowerCoef : -6 PowerShift : 1 PolynomialP : [1] PolynomialQ : [1 -4 4] }}] [1 {SeriesBinaryBBP : { CoefficientP : 1 CoefficientQ : 0 CoefficientD : 1 Alternating : "true" PowerCoef : -6 PowerShift : 1 PolynomialP : [1] PolynomialQ : [1 -8 16] }}] ] } }