A024278 - OEIS

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A024278

Expansion of e.g.f.: tan(tan(x))*sin(x)/2.

0, 1, 6, 179, 9676, 854597, 111361298, 20061390071, 4771665341848, 1447947783210249, 545795035419716382, 250167844738073041595, 137013989756844496168292, 88367083240335992790622797 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,3`
	LINKS	`Table of n, a(n) for n=0..13.`
	MATHEMATICA	`With[{nn=30}, Take[CoefficientList[Series[Tan[Tan[x]]Sin[x]/2, {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] ( Harvey P. Dale, Sep 09 2012 *)`
	CROSSREFS	`Cf. A009698.` `Sequence in context: A012152 A165928 A127910 * A062240 A253779 A046989` `Adjacent sequences: A024275 A024276 A024277 * A024279 A024280 A024281`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin`
	EXTENSIONS	`Extended and signs tested 03/97.` `Definition clarified by Harvey P. Dale, Sep 09 2012`
	STATUS	`approved`

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Last modified December 9 09:12 EST 2023. Contains 367690 sequences. (Running on oeis4.)