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Search: id:A013114
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A013114 sech(arcsinh(x)+arctan(x))=1-4/2!*x^2+104/4!*x^4-6790/6!*x^6... +0
1
1, -4, 104, -6790, 827480, -162019450, 46518314300, -18413421592150, 9610889961530000, -6395770003655763250, 5285420552751908562500, -5310341702734086669088750, 6374725468204682712703775000 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A024262 A012958 A012984 this_sequence A158114 A082736 A157039

Adjacent sequences: A013111 A013112 A013113 this_sequence A013115 A013116 A013117

KEYWORD

sign

AUTHOR

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

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Last modified December 1 13:27 EST 2009. Contains 167806 sequences.

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