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Search: id:A013480
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A013480 sec(cos(x)-cosh(x)) = 1+12/4!*x^4+8512/8!*x^8+41692992/12!*x^12... +0
1
1, 12, 8512, 41692992, 748457181952, 35753146158600192, 3745546830245915840512, 756079630242293501892083712 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A012531 A013481 A013513 this_sequence A107254 A012532 A012732

Adjacent sequences: A013477 A013478 A013479 this_sequence A013481 A013482 A013483

KEYWORD

nonn

AUTHOR

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

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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