A009663 - OEIS

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A009663

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

1, 4, 12, -128, -5232, -54848, 5325504, 403442176, 558723328, -2994514283520, -295655443772416, 17110494845845504, 9628494110111469568, 971219320278689300480, -262986198032101769035776 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	LINKS	`Table of n, a(n) for n=0..14.`
	MATHEMATICA	`With[{nn=30}, Take[CoefficientList[Series[Tan[Sin[x]]Cosh[x], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, May 15 2021 *)`
	CROSSREFS	`Sequence in context: A331905 A367885 A053551 * A197899 A002029 A204321` `Adjacent sequences: A009660 A009661 A009662 * A009664 A009665 A009666`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin`
	EXTENSIONS	`Extended with signs by Olivier Gérard, Mar 15 1997` `Previous Mathematica program replaced by Harvey P. Dale, May 15 2021`
	STATUS	`approved`

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Last modified December 5 20:54 EST 2023. Contains 367594 sequences. (Running on oeis4.)