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Search: id:A012689
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A012689 arctan(tanh(x)*cos(x))=x-7/3!*x^3+165/5!*x^5-10827/7!*x^7... +0
1
1, -7, 165, -10827, 1316585, -257028847, 73616009805, -29070305745267, 15137914082015825, -10050622525103392087, 8286707825575406550645, -8306718039292070745761307, 9948875920938941746670110265 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A027549 A020998 A012504 this_sequence A098632 A009807 A124126

Adjacent sequences: A012686 A012687 A012688 this_sequence A012690 A012691 A012692

KEYWORD

sign

AUTHOR

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

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Last modified December 3 14:12 EST 2008. Contains 151279 sequences.

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