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Search: id:A012828
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A012828 arcsinh(sec(x)*arcsinh(x))=x+1/3!*x^3+13/5!*x^5-163/7!*x^7+12409/9!*x^9... +0
1
1, 1, 13, -163, 12409, -931207, 131515525, -22736601067, 5414338951025, -1621869733040399, 608306871018022013, -276781704508170478131, 150811097250449098751721, -96804685135198494755720343 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A133180 A090134 A087400 this_sequence A119539 A078362 A157381

Adjacent sequences: A012825 A012826 A012827 this_sequence A012829 A012830 A012831

KEYWORD

sign

AUTHOR

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

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

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