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 A120083 Denominators of expansion for Debye function for n=1: D(1,x). 5
 1, 4, 36, 1, 3600, 1, 211680, 1, 10886400, 1, 526901760, 1, 16999766784000, 1, 1120863744000, 1, 181400588328960000, 1, 97072790126247936000, 1, 16860010916664115200000, 1, 324325300906011525120000, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Numerators are found under A120082. LINKS FORMULA a(n)=denominator(r(n)), with r(n):=[x^n](1-x/4+sum((B(2*k)/((2*k+1)*(2*k)!))*x^(2*k),0,..infinity)), |x|<2*pi. B(2*k):=A000367(k)/A002445(k) (Bernoulli numbers). a(n) = denominator(B(n)/(n+1)!), n >= 0. See the comment on the e.g.f. D(1,x) in A120082.- Wolfdieter Lang, Jul 15 2013 CROSSREFS Cf. A120082. Sequence in context: A183882 A053426 A172282 * A110219 A174413 A162990 Adjacent sequences:  A120080 A120081 A120082 * A120084 A120085 A120086 KEYWORD nonn,easy,frac AUTHOR Wolfdieter Lang, Jul 20 2006 STATUS approved

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Last modified September 30 18:12 EDT 2020. Contains 337440 sequences. (Running on oeis4.)