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Search: id:A012804
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A012804 tan(sec(x)*arctan(x))=x+3/3!*x^3+65/5!*x^5+2051/7!*x^7+154209/9!*x^9... +0
1
1, 3, 65, 2051, 154209, 14263139, 2239618017, 411001918627, 110281957937729, 33549045899804227, 13741520797366881025, 6244634409478025568963, 3628509505783902549611425, 2300839492251656581442561187 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A119924 A084883 A112000 this_sequence A012837 A036778 A065400

Adjacent sequences: A012801 A012802 A012803 this_sequence A012805 A012806 A012807

KEYWORD

nonn

AUTHOR

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

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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