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Search: id:A012448
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A012448 cos(arctan(x)*tan(x))=1-12/4!*x^4-7280/8!*x^8+241920/10!*x^10... +0
1
1, 0, -12, 0, -7280, 241920, -39796416, 5601756160, -1164660739840, 326680627961856, -107144725837171712, 45897715016709799936, -22689657885234118356992, 13649678748377009638277120 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Adjacent sequences: A012445 A012446 A012447 this_sequence A012449 A012450 A012451

Sequence in context: A120954 A012337 A012339 this_sequence A012338 A012453 A012454

KEYWORD

sign

AUTHOR

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

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.

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