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 A144664 Decimal expansion of Product_{n>=2} (n^5-1)/(n^5+1). 2
 9, 2, 8, 7, 8, 6, 9, 3, 5, 7, 9, 9, 5, 5, 2, 4, 5, 3, 7, 5, 1, 4, 6, 9, 9, 1, 5, 6, 5, 2, 8, 5, 2, 3, 5, 1, 9, 3, 2, 0, 1, 0, 1, 5, 0, 3, 7, 5, 3, 0, 4, 1, 1, 8, 2, 0, 1, 0, 2, 8, 2, 6, 5, 1, 4, 8, 7, 2, 0, 0, 7, 3, 7, 9, 9, 1, 6, 0, 2, 2, 3, 8, 8, 2, 7, 4, 1, 5, 5, 1, 8, 1, 0, 8, 4, 1, 9, 2, 7, 8, 2, 5, 1, 0, 5, 9, 7, 2, 6, 2 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS J. Borwein et al., Experimentation in Mathematics, 2004, section 1.2. E. W. Weisstein, Infinite Product, MathWorld. EXAMPLE 0.92878693579955245375146991... MATHEMATICA p = 2*Gamma[2-(-1)^(1/5)] * Gamma[2+(-1)^(2/5)] * Gamma[2-(-1)^(3/5)] * Gamma[2+(-1)^(4/5)] / (Gamma[2+(-1)^(1/5)] * Gamma[2-(-1)^(2/5)] * Gamma[2+(-1)^(3/5)] * Gamma[2-(-1)^(4/5)]); RealDigits[Re[p], 10, 110][[1]] (* Jean-François Alcover, Feb 11 2013, updated Nov 18 2015 *) RealDigits[Re[N[Product[(n^5 - 1)/(n^5 + 1), {n, 2, Infinity}], 110]]][[1]] (* Bruno Berselli, Apr 02 2013 *) CROSSREFS Cf. A090986, A255435. Sequence in context: A011453 A125580 A086238 * A241560 A309821 A073007 Adjacent sequences:  A144661 A144662 A144663 * A144665 A144666 A144667 KEYWORD nonn,cons AUTHOR R. J. Mathar, Feb 01 2009 EXTENSIONS More terms from Jean-François Alcover, Feb 11 2013 STATUS approved

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Last modified January 22 16:29 EST 2020. Contains 331152 sequences. (Running on oeis4.)