A012506 - OEIS

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A012506

cosh(cos(x)*arctan(x))=1+1/2!*x^2-19/4!*x^4+445/6!*x^6-14663/8!*x^8...

1, 1, -19, 445, -14663, 718265, -50970203, 4876389557, -548752599567, 47436062951281, 12631837146241245, -15669443125044502867, 12502889747981009020841, -9927639811374322485212375 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	CROSSREFS	`Sequence in context: A108145 A114350 A194730 * A201798 A081686 A003700` `Adjacent sequences: A012503 A012504 A012505 * A012507 A012508 A012509`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 14 00:47 EST 2012. Contains 205567 sequences.