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Search: id:A012843
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A012843 tan(sec(x)*arctanh(x))=x+7/3!*x^3+185/5!*x^5+11471/7!*x^7... +0
1
1, 7, 185, 11471, 1263185, 215079159, 52220520521, 17117211436287, 7278847910698529, 3895256097472909671, 2561265786122546675545, 2029572906879775183011503, 1907361016227301624675795825 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Adjacent sequences: A012840 A012841 A012842 this_sequence A012844 A012845 A012846

Sequence in context: A080484 A068339 A059382 this_sequence A012798 A010332 A024096

KEYWORD

nonn

AUTHOR

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

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Last modified May 13 01:46 EDT 2008. Contains 139661 sequences.

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