id:A097322 - OEIS Search Results

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(2n)! divided by denominator of Taylor expansion of exp(cos(x)-1).

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1, 4, 1, 1, 4, 1, 1, 4, 1, 11, 4, 1, 1, 4, 11, 1, 4, 31, 1, 44, 29, 1, 4, 1, 11, 4, 29, 1, 4, 11, 1, 4, 31, 1, 1276, 1, 41, 4, 1, 11, 116, 1, 1, 292, 11, 1, 4, 31, 127571, 44, 1, 1, 4, 1, 319, 4, 41, 1, 4, 11, 1, 4, 899, 1, 44, 1, 1, 4, 29, 11, 4, 1, 1, 4, 583, 1, 4756, 361429 (list; graph; listen)

	OFFSET	`1,2`
	PROGRAM	`(PARI) a(n)=(2n)!/denominator(polcoeff(Ser(exp(cos(x)-1)), 2n))`
	CROSSREFS	`Equals A010050(n) / A047690(n).` `Cf. A005046.` `Sequence in context: A100642 A014518 A069289 this_sequence A080278 A070085 A131776` `Adjacent sequences: A097319 A097320 A097321 this_sequence A097323 A097324 A097325`
	KEYWORD	`nonn,easy`
	AUTHOR	`Ralf Stephan, Aug 08 2004`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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