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Search: id:A012460
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A012460 cos(arctan(x)*atan(x))=1-12/4!*x^4+480/6!*x^6-27888/8!*x^8... +0
2
1, 0, -12, 480, -27888, 2353920, -274245312, 41974872576, -8068087373568, 1860842339721216, -486190504963034112, 129225947748233994240, -22917287813817561968640, -13673939410058068058112000 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A009083 A012681 A009168 this_sequence A012685 A012465 A012394

Adjacent sequences: A012457 A012458 A012459 this_sequence A012461 A012462 A012463

KEYWORD

sign

AUTHOR

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

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Last modified September 7 15:23 EDT 2008. Contains 143483 sequences.

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