A009074 - OEIS

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A009074

Expansion of cos(tan(x))/exp(x).

1, -1, 0, 2, -12, 44, -216, 944, -5296, 27632, -168128, 975072, -5391680, 27882048, 38412672, -1986004224, 61881368832, -850359527680, 16576603568128, -222801125934592, 4120672559178752, -57863671042155520 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Cos[ Tan[ x ] ]/Exp[ x ]`
	CROSSREFS	`Sequence in context: A013704 A025495 A028570 * A066258 A123771 A046991` `Adjacent sequences: A009071 A009072 A009073 * A009075 A009076 A009077`
	KEYWORD	`sign,easy`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.