id:A012280 - OEIS Search Results

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sech(exp(x)*log(x+1))=1-1/2!*x^2-3/3!*x^3-6/4!*x^4+30/5!*x^5...

+0
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1, 0, -1, -3, -6, 30, 270, 1400, -3080, -86184, -893760, -754688, 61595424, 1201314400, 5341239904, -68598744240, -2871938780672, -25391249097088, 31527888993024, 10819112145879168, 155954430765392768 (list; graph; listen)

	OFFSET	`0,4`
	CROSSREFS	`Sequence in context: A088436 A088506 A061137 this_sequence A002164 A117805 A154135` `Adjacent sequences: A012277 A012278 A012279 this_sequence A012281 A012282 A012283`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research