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Search: id:A012159
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A012159 exp(tan(arcsinh(x)))=1+x+1/2!*x^2+2/3!*x^3+5/4!*x^4+16/5!*x^5... +0
2
1, 1, 1, 2, 5, 16, 61, 216, 937, 6400, 41881, 125696, 259181, 18156672, 225924245, -930421504, -25529526319, 394852151296, 8376428366257, -97538559528960, -2542034772205739, 37824762737852416 (list; graph; listen)
OFFSET

0,4

CROSSREFS

A012167(n)=A012159(2*n)

Sequence in context: A000764 A005036 A012051 this_sequence A009736 A104858 A138265

Adjacent sequences: A012156 A012157 A012158 this_sequence A012160 A012161 A012162

KEYWORD

sign

AUTHOR

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

EXTENSIONS

More terms from njas, Aug 27 2006

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


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