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Search: id:A012620
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A012620 sec(arcsinh(x)*tan(x))=1+12/4!*x^4+120/6!*x^6+15120/8!*x^8... +0
1
1, 0, 12, 120, 15120, 640320, 143136576, 14091272832, 5105629251840, 906008454739968, 490783256100396032, 136461255865204086784, 104233836908816608661504, 41544908070600747941806080 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Adjacent sequences: A012617 A012618 A012619 this_sequence A012621 A012622 A012623

Sequence in context: A012563 A012441 A012373 this_sequence A012564 A012442 A037097

KEYWORD

nonn

AUTHOR

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

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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