A012570 - OEIS

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A012570

sech(sinh(x)*cos(x))=1-1/2!*x^2+13/4!*x^4-277/6!*x^6+12185/8!*x^8...

1, -1, 13, -277, 12185, -840489, 84759717, -11842313277, 2175505004849, -510170676389457, 148514509335632701, -52567147994554822501, 22230968162996350213321, -11070593880057710100740473 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	CROSSREFS	`Sequence in context: A196973 A197560 A133284 * A160294 A092145 A035017` `Adjacent sequences: A012567 A012568 A012569 * A012571 A012572 A012573`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 15 18:15 EST 2012. Contains 205835 sequences.