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Search: id:A013387
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A013387 sech(sin(x)-tanh(x))=1-10/6!*x^6+840/8!*x^8-60870/10!*x^10... +0
1
1, 0, 0, -10, 840, -60870, 5042180, -535134730, 75998689520, -14286917494990, 3407940125324860, -990760306939592050, 342314173738467052200, -138600427075503715528310, 65139256364305112582847540 (list; graph; listen)
OFFSET

0,4
CROSSREFS

Sequence in context: A013386 A013385 A013383 this_sequence A013438 A013434 A013436

Adjacent sequences: A013384 A013385 A013386 this_sequence A013388 A013389 A013390

KEYWORD

sign

AUTHOR

Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)

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Last modified December 4 12:27 EST 2008. Contains 151280 sequences.

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