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A012033 sech(sin(sinh(x)))=1-1/2!*x^2+5/4!*x^4-13/6!*x^6-407/8!*x^8... 0

%I

%S 1,-1,5,-13,-407,30151,-1142483,19202427,3747342929,-722092683505,

%T 76341208430549,-2313301317273981,-1769780901329435719,

%U 628518840135423728599,-125498832189487922441219

%N sech(sin(sinh(x)))=1-1/2!*x^2+5/4!*x^4-13/6!*x^6-407/8!*x^8...

%K sign

%O 0,3

%A Patrick Demichel (patrick.demichel(AT)hp.com)

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Last modified August 8 21:55 EDT 2022. Contains 356016 sequences. (Running on oeis4.)