A012595 - OEIS

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A012595

sech(arcsinh(x)*exp(x))=1-1/2!*x^2-6/3!*x^3-15/4!*x^4+60/5!*x^5...

1, 0, -1, -6, -15, 60, 975, 5390, -10143, -563976, -5982945, -9594398, 788690001, 14618418100, 85743956207, -2026783258890, -64627785960767, -716881015039504, 7211897523161151, 458865700394648778 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	CROSSREFS	`Sequence in context: A093042 A145638 A067665 * A012294 A069750 A035077` `Adjacent sequences: A012592 A012593 A012594 * A012596 A012597 A012598`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.