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Search: id:A013481
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A013481 sech(cos(x)-cosh(x)) = 1-12/4!*x^4+8288/8!*x^8-39475392/12!*x^12... +0
1
1, -12, 8288, -39475392, 689369608448, -32038788679636992, 3265606511334528831488, -641363922266872095050022912 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A107251 A009173 A012531 this_sequence A013513 A013480 A107254

Adjacent sequences: A013478 A013479 A013480 this_sequence A013482 A013483 A013484

KEYWORD

sign

AUTHOR

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

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Last modified November 30 22:12 EST 2008. Contains 150989 sequences.

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