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Search: id:A012826
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A012826 cos(sec(x)*arcsinh(x))=1-1/2!*x^2-7/4!*x^4-145/6!*x^6-2063/8!*x^8... +0
1
1, -1, -7, -145, -2063, -128705, 5154217, -510686033, 254809389793, -27371394484993, 18728499608356185, -5038330344345849489, 3197858289863468529361, -1630641802209014177997505 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A104240 A156978 A163028 this_sequence A102059 A064624 A048935

Adjacent sequences: A012823 A012824 A012825 this_sequence A012827 A012828 A012829

KEYWORD

sign

AUTHOR

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

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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