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Search: id:A012812
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A012812 sec(sec(x)*arctan(x))=1+1/2!*x^2+9/4!*x^4+345/6!*x^6+14833/8!*x^8... +0
1
1, 1, 9, 345, 14833, 1493265, 158895033, 30935964969, 6150088646497, 1967749424641953, 629235472952720105, 300014790466799113849, 140704010339485622390865, 93651237671421167849769905 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A110695 A157589 A055601 this_sequence A119756 A063068 A130558

Adjacent sequences: A012809 A012810 A012811 this_sequence A012813 A012814 A012815

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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