A009559 - OEIS

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A009559

Expansion of sin(x)/cosh(tan(x)).

1, -4, -4, 104, 5392, 167936, 1592384, -401669248, -50456008448, -2742470413312, 310319594802176, 116183782320392192, 12985923007223566336, -3777809306960427778048, -2961060938622580774715392 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	MATHEMATICA	`Sin[ x ]/Cosh[ Tan[ x ] ] (* Odd Part *)`
	CROSSREFS	`Sequence in context: A092209 A068337 A009534 * A163196 A055071 A097572` `Adjacent sequences: A009556 A009557 A009558 * A009560 A009561 A009562`
	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 17:11 EST 2012. Contains 205938 sequences.