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Search: id:A012808
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A012808 arcsinh(sec(x)*arctan(x))=x+28/5!*x^5-728/7!*x^7+54416/9!*x^9... +0
1
1, 0, 28, -728, 54416, -5676352, 900432960, -193766436992, 55349093955840, -20153308820338688, 9138844606925237248, -5050190610067417167872, 3343568694767924711428096, -2613638716122945595362951168 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Adjacent sequences: A012805 A012806 A012807 this_sequence A012809 A012810 A012811

Sequence in context: A038121 A070310 A004293 this_sequence A097834 A063817 A113532

KEYWORD

sign

AUTHOR

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

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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