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Search: id:A012241
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A012241 log(cos(arcsinh(x)))=-1/2!*x^2+2/4!*x^4-40/6!*x^6+1360/8!*x^8... +0
1
-1, 2, -40, 1360, -87680, 8723200, -1254323200, 245463296000, -62768582656000, 20318491009024000, -8121379360440320000, 3928322245164728320000, -2261534088991670272000000 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A012637 A127429 A012834 this_sequence A099707 A000816 A000819

Adjacent sequences: A012238 A012239 A012240 this_sequence A012242 A012243 A012244

KEYWORD

sign

AUTHOR

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

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Last modified September 5 01:44 EDT 2008. Contains 143476 sequences.

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