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 A144668 Decimal expansion of product_{n=2..infinity} (n^9-1)/(n^9+1). 0
 9, 9, 5, 9, 9, 1, 2, 6, 5, 8, 9, 3, 4, 0, 4, 6, 5, 5, 1, 1, 9, 1, 9, 4, 1, 3, 1, 7, 4, 5, 8, 2, 2, 9, 3, 0, 8, 5, 6, 6, 2, 2, 6, 6, 6, 2, 5, 0, 3, 5, 5, 0, 4, 9, 7, 5, 3, 4, 3, 9, 9, 7, 1, 9, 6, 3, 6, 6, 5, 1, 6, 1, 7, 2, 7, 3, 5, 1, 1, 6, 2, 3, 2, 8, 3, 3, 6, 4, 3, 9, 7, 7, 9, 9, 2, 7, 6, 1, 3, 0, 0, 9, 7, 6, 6 (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 0.99599126589340465511919... MATHEMATICA p = 2/3*Product[Gamma[2 + (-1)^(k + k/9)], {k, {1, 2, 4, 5, 7, 8}}]/ Product[Gamma[2 - (-1)^(k + k/9)], {k, {1, 2, 4, 5, 7, 8}}]; RealDigits[Re[p], 10, 105][[1]] (* Jean-François Alcover, Feb 11 2013, updated Nov 18 2015 *) CROSSREFS Cf. A090986. Sequence in context: A195480 A175619 A136130 * A021505 A175571 A019894 Adjacent sequences:  A144665 A144666 A144667 * A144669 A144670 A144671 KEYWORD nonn,cons,easy 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 17 14:57 EST 2020. Contains 330958 sequences. (Running on oeis4.)