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Search: id:A013144
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A013144 arctan(tanh(x)+atan(x))=2*x-20/3!*x^3+1128/5!*x^5-158112/7!*x^7... +0
1
2, -20, 1128, -158112, 41334912, -17364051712, 10697958401024, -9087507664709632, 10179531541621604352, -14538540850131730563072, 25785525466844174964228096, -55601885971190702384095952896 (list; graph; listen)
OFFSET

0,1
CROSSREFS

Sequence in context: A008793 A015192 A012790 this_sequence A112359 A053848 A134476

Adjacent sequences: A013141 A013142 A013143 this_sequence A013145 A013146 A013147

KEYWORD

sign

AUTHOR

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

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Last modified December 4 08:07 EST 2009. Contains 170310 sequences.

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