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Search: id:A012810
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A012810 arctanh(sec(x)*atan(x))=x+3/3!*x^3+73/5!*x^5+2779/7!*x^7... +0
1
1, 3, 73, 2779, 260177, 32853491, 6787498521, 1803655970635, 660549566885793, 299826162055728355, 172107541834064358121, 118707937911469881769147, 98574741929922225569568241 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A054689 A060883 A093165 this_sequence A020517 A119017 A002667

Adjacent sequences: A012807 A012808 A012809 this_sequence A012811 A012812 A012813

KEYWORD

nonn

AUTHOR

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

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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