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Search: id:A012509
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A012509 log(cos(x)*cos(x))=-4/4!*x^4-32/6!*x^6-544/8!*x^8-15872/10!*x^10... +0
2
4, 32, 544, 15872, 707584, 44736512, 3807514624, 419730685952, 58177770225664, 9902996106248192, 2030847773013704704, 493842960380415967232, 140503203207887919775744 (list; graph; listen)
OFFSET

0,1
COMMENT

a(n) = 2*A000182(n+2).

CROSSREFS

Sequence in context: A036442 A127945 A086899 this_sequence A013041 A006024 A118995

Adjacent sequences: A012506 A012507 A012508 this_sequence A012510 A012511 A012512

KEYWORD

nonn

AUTHOR

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

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

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