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Search: id:A012182
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A012182 cosh(tan(arctanh(x)))=1+1/2!*x^2+17/4!*x^4+721/6!*x^6+56545/8!*x^8... +0
1
1, 1, 17, 721, 56545, 7062241, 1283497841, 319471153457, 104260273696961, 43168502192389825, 22100367268731836881, 13703484478282258062481, 10117607255517016666964897, 8769262856125733251376413601 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A012050 A012157 A012137 this_sequence A012029 A012193 A128274

Adjacent sequences: A012179 A012180 A012181 this_sequence A012183 A012184 A012185

KEYWORD

nonn

AUTHOR

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

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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