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Search: id:A013359
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A013359 sech(sin(x)-tan(x))=1-90/6!*x^6-2520/8!*x^8-126630/10!*x^10... +0
1
1, 0, 0, -90, -2520, -126630, -2243340, 382612230, 134674853040, 26271944587890, 4394379581092620, 324925984573170750, -181350289825568364600, -145875833202121504544790 (list; graph; listen)
OFFSET

0,4
CROSSREFS

Sequence in context: A008393 A055603 A109124 this_sequence A013355 A013357 A013358

Adjacent sequences: A013356 A013357 A013358 this_sequence A013360 A013361 A013362

KEYWORD

sign

AUTHOR

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

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Last modified August 29 14:50 EDT 2008. Contains 143238 sequences.

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