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A012544 sech(sinh(x)*arcsin(x))=1-12/4!*x^4-240/6!*x^6+1680/8!*x^8... 0

%I

%S 1,0,-12,-240,1680,660480,39530304,-3855231744,-1466146656000,

%T -147651751649280,43245441015313408,21785411128189063168,

%U 453349606338812022784,-4374564365537166405795840

%N sech(sinh(x)*arcsin(x))=1-12/4!*x^4-240/6!*x^6+1680/8!*x^8...

%K sign

%O 0,3

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

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Last modified September 25 12:12 EDT 2022. Contains 356984 sequences. (Running on oeis4.)