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Search: id:A012303
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A012303 sech(sin(x)*sin(x))=1-12/4!*x^4+240/6!*x^6+4368/8!*x^8... +0
1
1, 0, -12, 240, 4368, -942720, 42639168, 8638506240, -2287049555712, 38746394603520, 145600412857955328, -42974022434701332480, -7760313189299657306112, 11863589839842518338928640 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A033469 A012544 A009052 this_sequence A119837 A012538 A006588

Adjacent sequences: A012300 A012301 A012302 this_sequence A012304 A012305 A012306

KEYWORD

sign

AUTHOR

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

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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