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Search: id:A013557
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A013557 sec(cotan(x)-cotanh(x))=1+36/2!*x^2+357/6!*x^6+96/8!*x^8... +0
1
1, 36, 0, 357, 96, 246862, 63265, 2702139, 152243470, 3946109992628, 974761022098, 55898417585925641, 13686533679920614, 2087412316757286746, 370281073116766830343 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Adjacent sequences: A013554 A013555 A013556 this_sequence A013558 A013559 A013560

Sequence in context: A023929 A010113 A013556 this_sequence A022071 A156645 A037935

KEYWORD

nonn

AUTHOR

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

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Last modified November 8 20:39 EST 2009. Contains 166234 sequences.

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