A120083 - OEIS

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A120083

Denominators of expansion for Debye function for n=1: D(1,x).

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; internal format)

	OFFSET	`0,2`
	COMMENTS	`Numeratators are found under A120082.`
	FORMULA	`a(n)=denominator(r(n)), with r(n):=[x^n](1-x/4+sum((B(2k)/((2k+1)(2k)!))x^(2k),0,..infinity)), \|x\|<2pi. B(2k):=A000367(k)/A002445(k) (Bernoulli numbers).`
	CROSSREFS	`Sequence in context: A183882 A053426 A172282 * A110219 A174413 A162990` `Adjacent sequences: A120080 A120081 A120082 * A120084 A120085 A120086`
	KEYWORD	`nonn,easy,frac`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Jul 20 2006`

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Last modified February 15 11:53 EST 2012. Contains 205778 sequences.