A012763 - OEIS

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A012763

sech(cosh(x)*log(x+1))=1-1/2!*x^2+3/3!*x^3-18/4!*x^4+60/5!*x^5...

1, 0, -1, 3, -18, 60, -60, -1890, 31472, -319032, 2369280, -6374280, -209401368, 5594400240, -90523285944, 1016295254520, -3922383447232, -184920315173888, 6878045401558272, -151394798389814208 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	CROSSREFS	`Sequence in context: A061317 A190313 A139362 * A006011 A012779 A074439` `Adjacent sequences: A012760 A012761 A012762 * A012764 A012765 A012766`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 15 07:38 EST 2012. Contains 205713 sequences.