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Search: id:A013148
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A013148 tanh(tanh(x)+arctan(x))=2*x-20/3!*x^3+872/5!*x^5-82848/7!*x^7... +0
1
2, -20, 872, -82848, 13615232, -3427600128, 1224824628224, -589372636243968, 367372633732907008, -287938978919399424000, 277156456747324043952128, -321405895510495023427223552 (list; graph; listen)
OFFSET

0,1
CROSSREFS

Sequence in context: A012495 A158268 A163594 this_sequence A006547 A135757 A158843

Adjacent sequences: A013145 A013146 A013147 this_sequence A013149 A013150 A013151

KEYWORD

sign

AUTHOR

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

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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