A009040 - OEIS

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A009040

Expansion of cos(sin(tanh(x))).

1, -1, 13, -373, 18649, -1433129, 156563045, -23043285021, 4392102360241, -1051530622359889, 308633929353801661, -108880766753141666757, 45418989883077539513225, -22097331609699052757909881 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Cos[ Sin[ Tanh[ x ] ] ] (* Even Part *)`
	CROSSREFS	`Sequence in context: A165391 A061015 A183472 * A009085 A012013 A082403` `Adjacent sequences: A009037 A009038 A009039 * A009041 A009042 A009043`
	KEYWORD	`sign`
	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 14:37 EST 2012. Contains 205930 sequences.