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Search: id:A012386
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A012386 sech(tan(x)*arcsin(x))=1-12/4!*x^4-360/6!*x^6-7280/8!*x^8... +0
1
1, 0, -12, -360, -7280, 504000, 121581504, 14369939584, 56810973440, -657138821830656, -255226784793623552, -45397358372525164544, 15722139759017802895360, 20152649683846086682296320 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A012553 A128043 A012431 this_sequence A130213 A012633 A009079

Adjacent sequences: A012383 A012384 A012385 this_sequence A012387 A012388 A012389

KEYWORD

sign

AUTHOR

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

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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