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Search: id:A012130
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A012130 arctanh(arcsin(tanh(x)))=x+1/3!*x^3+9/5!*x^5+169/7!*x^7+6513/9!*x^9... +0
1
1, 1, 9, 169, 6513, 382449, 33949369, 4083320409, 654225568353, 132856897394785, 33620948951783145, 10322993203249787529, 3791611637554126839505, 1638719968206448148183889 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A017306 A052774 A122725 this_sequence A119032 A121476 A121477

Adjacent sequences: A012127 A012128 A012129 this_sequence A012131 A012132 A012133

KEYWORD

nonn

AUTHOR

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

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Last modified September 7 15:23 EDT 2008. Contains 143483 sequences.

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